P2h Big Bang
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The document discusses the origins and evolution of the universe from the Big Bang to the present. It describes how the Big Bang resulted in a hot, dense cosmic soup of protons, neutrons and electrons that cooled over time and formed the first atoms of hydrogen and helium. Gravity caused these atoms to coalesce into the first stars and galaxies. Over billions of years, gravity continued to draw matter together, forming more complex structures like planets and solar systems. While much is understood about how the universe has evolved since the Big Bang, key questions remain about what triggered the initial expansion and what the ultimate fate of the universe may be.
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Big Bang Theorychandler
The Big Bang Theory attempts to explain how the universe was created around 13.8 billion years ago from an infinitely dense and hot singularity. It holds that all matter in the observable universe was compressed into a tiny point that began rapidly expanding and cooling. Two key scientists who developed it were Hubble and Lemaitre. Black holes are theorized to be the power behind the Big Bang, as their intense gravity can compress matter into a single point, and could trigger another "Big Bang" by consuming all matter into a single black hole that causes re-expansion. The theory remains controversial on questions like what caused or predated the initial expansion.
Galileo’s discoveries
Galileo made several important discoveries through his use of the telescope. He discovered that Jupiter has four moons, proving that not everything revolves around Earth. He also observed that Mercury and Venus go through phases like the Moon, indicating they orbit the Sun. Galileo further discovered that all objects fall at the same rate, regardless of mass. These discoveries contradicted the prevailing beliefs of the time and significantly advanced our understanding of astronomy, gravity, and the solar system.
Stellar life cycle section 3
Stellar Life Cycle
1. Stars are born from dense clouds of gas and dust called nebulae.
2. Most stars, including our Sun, spend the majority of their lifespan fusing hydrogen into helium as main sequence stars.
3. Towards the end of their life, stars expand into red giants or supergiants and begin fusing heavier elements, before shrinking into white dwarfs, neutron stars, or black holes.
The Life Cycle of a Star PowerPoint
Stars are born from clouds of gas and dust called nebulae. Over billions of years, stars progress through various stages as they age. Lower mass stars begin as protostars and become main sequence stars fueled by nuclear fusion. As their hydrogen runs out, they become red giants and eventually white dwarfs. Higher mass stars explode as supernovae at the end of their lives, leaving behind neutron stars or black holes.
life cycle of a star
The life cycle of stars depends on their mass. Lower mass stars like our Sun will eventually become red giants then white dwarfs. Higher mass stars live shorter lives and end as supernovas, leaving behind neutron stars or black holes. All stars begin as nebulae of dust and gas that collapse under gravity into protostars and main sequence stars fueled by nuclear fusion.
Life Cycle Of A Star
The document discusses the life cycle of stars from their birth in nebulae to their death. Stars are born when gas and dust clouds collapse under gravity and heat up. During their main sequence phase, stars fuse hydrogen into helium in their cores. Later, larger stars become red giants or supergiants as their cores shrink and outer layers expand. Eventually, stars die and eject their outer layers, leaving behind dense remnants like white dwarfs, neutron stars, or black holes.
Star formation
The document discusses the lifecycle of stars from their formation to death. It begins by defining what stars and constellations are. It then focuses on our sun as a medium-sized, yellow star at the center of our solar system. Stars are classified based on temperature and brightness as young dwarf stars or older, larger supergiant stars. The document outlines the typical stages a star like the sun will progress through over billions of years from birth from clouds of dust and gas, burning hydrogen through nuclear fusion as a main sequence star, and eventual death through expansion and explosion at the end of its life. Various nebulae and supernova remnants are used as examples of star birth and death.
Ch 19 -life and death of stars
1. Stars are born through nuclear fusion and spend most of their life fusing hydrogen into helium as a main sequence star.
2. When stars exhaust their hydrogen fuel, low mass stars become red giants and high mass stars explode as supernovae.
3. The remnants of dead stars are white dwarfs, neutron stars, or black holes depending on the original star's mass.
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Big Bang Theorychandler
The Big Bang Theory attempts to explain how the universe was created around 13.8 billion years ago from an infinitely dense and hot singularity. It holds that all matter in the observable universe was compressed into a tiny point that began rapidly expanding and cooling. Two key scientists who developed it were Hubble and Lemaitre. Black holes are theorized to be the power behind the Big Bang, as their intense gravity can compress matter into a single point, and could trigger another "Big Bang" by consuming all matter into a single black hole that causes re-expansion. The theory remains controversial on questions like what caused or predated the initial expansion.
Galileo’s discoveries
Galileo made several important discoveries through his use of the telescope. He discovered that Jupiter has four moons, proving that not everything revolves around Earth. He also observed that Mercury and Venus go through phases like the Moon, indicating they orbit the Sun. Galileo further discovered that all objects fall at the same rate, regardless of mass. These discoveries contradicted the prevailing beliefs of the time and significantly advanced our understanding of astronomy, gravity, and the solar system.
Stellar life cycle section 3
Stellar Life Cycle
1. Stars are born from dense clouds of gas and dust called nebulae.
2. Most stars, including our Sun, spend the majority of their lifespan fusing hydrogen into helium as main sequence stars.
3. Towards the end of their life, stars expand into red giants or supergiants and begin fusing heavier elements, before shrinking into white dwarfs, neutron stars, or black holes.
The Life Cycle of a Star PowerPoint
Stars are born from clouds of gas and dust called nebulae. Over billions of years, stars progress through various stages as they age. Lower mass stars begin as protostars and become main sequence stars fueled by nuclear fusion. As their hydrogen runs out, they become red giants and eventually white dwarfs. Higher mass stars explode as supernovae at the end of their lives, leaving behind neutron stars or black holes.
life cycle of a star
The life cycle of stars depends on their mass. Lower mass stars like our Sun will eventually become red giants then white dwarfs. Higher mass stars live shorter lives and end as supernovas, leaving behind neutron stars or black holes. All stars begin as nebulae of dust and gas that collapse under gravity into protostars and main sequence stars fueled by nuclear fusion.
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The document discusses the life cycle of stars from their birth in nebulae to their death. Stars are born when gas and dust clouds collapse under gravity and heat up. During their main sequence phase, stars fuse hydrogen into helium in their cores. Later, larger stars become red giants or supergiants as their cores shrink and outer layers expand. Eventually, stars die and eject their outer layers, leaving behind dense remnants like white dwarfs, neutron stars, or black holes.
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The document discusses the lifecycle of stars from their formation to death. It begins by defining what stars and constellations are. It then focuses on our sun as a medium-sized, yellow star at the center of our solar system. Stars are classified based on temperature and brightness as young dwarf stars or older, larger supergiant stars. The document outlines the typical stages a star like the sun will progress through over billions of years from birth from clouds of dust and gas, burning hydrogen through nuclear fusion as a main sequence star, and eventual death through expansion and explosion at the end of its life. Various nebulae and supernova remnants are used as examples of star birth and death.
Ch 19 -life and death of stars
1. Stars are born through nuclear fusion and spend most of their life fusing hydrogen into helium as a main sequence star.
2. When stars exhaust their hydrogen fuel, low mass stars become red giants and high mass stars explode as supernovae.
3. The remnants of dead stars are white dwarfs, neutron stars, or black holes depending on the original star's mass.
THE LIFE CYCLE OF A STAR!
All stars begin as clouds of dust and gas called nebulae. When gravity causes the nebula to collapse, a protostar forms at the center. The protostar grows in size and temperature through nuclear fusion reactions until it becomes a stable main sequence star. Small stars like our Sun will eventually expand into red giants and shed their outer layers, leaving behind dense white dwarf cores. Larger stars may explode as supernovae, collapsing into neutron stars or black holes. The life cycle of a star depends on its initial mass, with smaller stars ending as white dwarfs and more massive stars ending as black holes or neutron stars.
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The document discusses the origins and current state of the universe according to scientific theories. It explains that the Big Bang theory is the dominant theory, where the universe began in an extremely dense and hot state around 13-15 billion years ago and has been expanding and cooling ever since. As it expanded, matter formed and the cosmic microwave background radiation was emitted. Other theories like steady state are mentioned but the Big Bang theory best fits observations of galaxy movements and the background radiation.
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The document describes theories about the origin and evolution of the universe. It discusses the Divine Creation theory, the Big Bang theory, and other theories such as the Steady State theory, the Big Crunch theory, and the Oscillating theory. It also covers different types of universes including open, closed, and finite universes. Modern tools for observing the universe are also outlined, such as telescopes, spectroscopes, and space shuttles.
Birth & death of stars (teach)
A short description, at the elementary school level, describing stars and telling how they are created and how they end.
What is in the big place called space inernet incomp.ppt
This document provides information about the universe and objects within it. It discusses the life cycle of stars from birth to death, the size order of objects in the universe from small to large, asteroids and comets and their potential risks, the fate of our solar system, and the main events of the Big Bang. Learners will watch a video, unscramble words, sort sentences, and reflect on what they have learned.
Life cycle of a star
Stars are born from contracting nebulae of gas and dust. They spend most of their lives on the main sequence, fusing hydrogen into helium in their cores. Eventually they run out of fuel in their cores and their outer layers expand, forming red giants or supergiants. From there, smaller stars shed their outer layers to form planetary nebulae and white dwarfs, while larger stars explode as supernovae, leaving behind neutron stars or black holes.
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There are different life cycle stages for stars depending on their original mass. Low mass stars progress through the stages of nebula, main sequence, red giant, planetary nebula, white dwarf, and black dwarf. High mass stars go through nebula, main sequence, red supergiant, supernova, and either become a neutron star or black hole. The main sequence stage can last billions of years for low mass stars but only millions for high mass stars.
Life Cycle Of A Star
The life cycle of a star consists of 5 main stages:
1. Protostars form from huge clouds of gas that collapse under gravity.
2. Main sequence stars like our Sun fuse hydrogen for billions of years.
3. Red giants expand and their outer layers cool as hydrogen runs out.
4. White dwarfs form as red giants collapse under gravity into dense remnants.
5. Black dwarfs are the final remains that cool for eternity, emitting no light.
рождение и жизнь_звезд(англ)
Stars are born from dense nebulas of gas and dust that collapse under gravity to form protostars. Protostars gain mass through fusion and become full fledged stars. Medium sized stars like our sun initially fuse hydrogen into helium, then expand into red giants as their cores shrink and heat up. Eventually their cores collapse to form white dwarfs. Massive stars burn through fuel much faster, ending as supernovae that expel material to form new nebulae. The most massive stars may collapse into neutron stars or black holes. Black holes have such strong gravity that not even light can escape, though they can be detected by the X-rays of material falling into them.
Star's Life Cycle
Stars go through life cycles like humans, being born from collapsing gas clouds, burning hydrogen through nuclear fusion on the main sequence, and eventually dying. Medium and low mass stars end as white dwarfs after shedding their outer layers, while high mass stars explode as supernovae, leaving behind neutron stars or black holes. Neutron stars are incredibly dense, rotating rapidly, while black holes have event horizons beyond which nothing, not even light, can escape.
The bigbang - theory!
The Big Bang theory developed from early observations of the structure and expansion of the universe. In 1912, Vesto Slipher measured the first Doppler shift of a spiral galaxy, finding that galaxies were receding from Earth, though he did not grasp the cosmological implications. Later, Hubble discovered this expansion, now known as Hubble's Law. Over long periods, small density fluctuations in the early universe grew via gravity to form all current astronomical structures. Major evidence for the Big Bang includes the expansion of the universe, cosmic microwave background radiation, and abundances of light elements formed in the early hot dense phases. Pioneering scientists who contributed include Einstein, Friedmann, and Hubble.
Death of a star
Stars eventually die when they exhaust their nuclear fuel. Small stars cool and shrink into white dwarfs, while larger stars that become red giants either shed their outer layers leaving behind dense neutron stars or explode in gigantic supernovae. The oldest stars are around 13.7 billion years old, formed shortly after the Big Bang, while big bright stars only live for around 10 million years and stars like the Sun will live for approximately 10 billion years.
Big Bang 1
The document discusses the Big Bang theory, which proposes that the observable universe expanded from an initial extremely hot and dense singularity around 13.8 billion years ago. It describes how the Big Bang originated from a tiny, dense point that exploded, causing galaxies to expand outward. Observational evidence that supports the Big Bang theory includes the discovery of cosmic microwave background radiation and primordial elements like helium and deuterium in ancient stars and distant reaches of the universe. The document also notes that the Big Bang theory is constantly revised as new evidence and theories emerge.
4.2 Stars have Life Cycles
Stars change over their life cycles depending on their mass. Low-mass stars like our Sun remain on the main sequence for billions of years, slowly fusing hydrogen into helium. Eventually they expand into red giants and later cool into white dwarfs. High-mass stars burn through their fuel quickly and explode as supernovae after millions of years, leaving behind neutron stars or black holes. All stars form from contracting nebulae of gas and dust.
Proficiency #4 for astronomey in science
The document discusses the formation of the solar system. It describes how a large rotating cloud of dust and gas called the Solar Nebula collapsed, forming the sun at the center and flattening particles into planetesimals that became the planets, moons, and other objects in the solar system. It then compares the inner terrestrial planets of Mercury, Venus, Earth and Mars to the outer gas giant planets of Jupiter, Saturn, Uranus and Neptune.
Big Bang Theory Astronomy Lesson PowerPoint
This PowerPoint is one small part of the Astronomy Topics unit from www.sciencepowerpoint.com. This unit consists of a five part 3000+ slide PowerPoint roadmap, 12 page bundled homework package, modified homework, detailed answer keys, 8 pages of unit notes for students who may require assistance, follow along worksheets, and many review games. The homework and lesson notes chronologically follow the PowerPoint slideshow. The answer keys and unit notes are great for support professionals. The activities and discussion questions in the slideshow and meaningful. The PowerPoint includes built-in instructions, visuals, and follow up questions. Also included are critical class notes (color coded red), project ideas, video links, and review games. This unit also includes four PowerPoint review games (110+ slides each with Answers), 38+ video links, lab handouts, activity sheets, rubrics, materials list, templates, guides, and much more. Also included is a 190 slide first day of school PowerPoint presentation. Teaching Duration = 5+ weeks. Areas of Focus in the Astronomy Topics Unit: The Solar System and the Sun, Order of the Planets, Our Sun, Life Cycle of a Star, Size of Stars, Solar Eclipse, Lunar Eclipse, The Inner Planets, Mercury, Venus, Earth, Moon, Craters, Tides, Phases of the Moon, Mars and Moons, Rocketry, Asteroid Belt, NEOs, The Torino Scale, The Outer Planets and Gas Giants, Jupiter / Moons, Saturn / Moons, Uranus / Moons, Neptune / Moons, Pluto's Demotion, The Kuiper Belt, Oort Cloud, Comets / Other, Beyond the Solar System, Types of Galaxies, Blackholes, Extrasolar Planets, The Big Bang, Dark Matter, Dark Energy, The Special Theory of Relativity, Hubble Space Telescope, Constellations, Spacetime and much more. If you have any questions please feel free to contact me. Thanks again and best wishes. Sincerely, Ryan Murphy M.Ed www.sciencepowerpoint@gmail.com
Stars concept map_notes2_2
The document discusses the classification of stars based on size, temperature, brightness, and lifespan. It describes how stars are born from nebulae and how their lifespan and death depends on their mass. Smaller stars have less violent deaths, becoming white dwarfs, while larger stars die in supernova explosions, potentially leaving behind neutron stars or black holes. It also provides an overview of the different types of galaxies including spiral, elliptical, and irregular galaxies.
Birth of a star
Stars are born in vast nebulae clouds of dust and gas scattered throughout space. Gravity gathers hydrogen in these clouds, causing them to grow denser and hotter over time. Eventually, the hydrogen heats up to 18 million degrees Fahrenheit, igniting nuclear fusion reactions that turn the hydrogen into helium - this is the moment a star is born. The color of stars depends on their temperature, ranging from hot blue-white to cooler and dimmer red. The largest known star is VY Canis Majoris, which could fit the sun inside it over 2,000 times.
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Life Cycle of Stars Stations
The document provides background information on stars' life cycles and how they are determined by mass. It states that stars with greater mass will have shorter life cycles as they must burn hot and fast to maintain equilibrium, using up fuel quickly and dying young in traumatic explosions. Average stars will live longer, peaceful deaths. It then lists directions for an activity involving classifying stars on the Hertzsprung-Russell diagram and answering conclusion questions.
Earth Science Astronomy - The big bang theory
The Big Bang occurred approximately 13.7 billion years ago from a single point that contained all matter and energy. Within the first 3 minutes, the universe expanded from the size of an atom to larger than a grapefruit as energy froze into matter. Over hundreds of thousands of years, the first atoms formed, mostly hydrogen and helium. Stars and galaxies began to take shape between 200-400 million years. Our solar system formed 4.6 billion years ago. Evidence for the Big Bang includes the expansion of the universe, cosmic background radiation, quasars, radioactive decay rates, and observations of stellar formation and distances.
The Big Bang Theory
The document summarizes the history and development of the Big Bang theory. It describes how discoveries in astronomy and physics have shown that the universe started approximately 13.8 billion years ago from an infinitely dense and hot singularity. It then explains the three phases of the early universe and some of the scientists like Einstein, Friedman, Hubble, and Lemaître who contributed to establishing the theory. Finally, it discusses some evidence that supports the Big Bang theory like the discovery of the cosmic microwave background radiation and some continuing problems and areas of research.
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All stars begin as clouds of dust and gas called nebulae. When gravity causes the nebula to collapse, a protostar forms at the center. The protostar grows in size and temperature through nuclear fusion reactions until it becomes a stable main sequence star. Small stars like our Sun will eventually expand into red giants and shed their outer layers, leaving behind dense white dwarf cores. Larger stars may explode as supernovae, collapsing into neutron stars or black holes. The life cycle of a star depends on its initial mass, with smaller stars ending as white dwarfs and more massive stars ending as black holes or neutron stars.
Astronomy Intro
The document discusses the origins and current state of the universe according to scientific theories. It explains that the Big Bang theory is the dominant theory, where the universe began in an extremely dense and hot state around 13-15 billion years ago and has been expanding and cooling ever since. As it expanded, matter formed and the cosmic microwave background radiation was emitted. Other theories like steady state are mentioned but the Big Bang theory best fits observations of galaxy movements and the background radiation.
The universe
The document describes theories about the origin and evolution of the universe. It discusses the Divine Creation theory, the Big Bang theory, and other theories such as the Steady State theory, the Big Crunch theory, and the Oscillating theory. It also covers different types of universes including open, closed, and finite universes. Modern tools for observing the universe are also outlined, such as telescopes, spectroscopes, and space shuttles.
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A short description, at the elementary school level, describing stars and telling how they are created and how they end.
What is in the big place called space inernet incomp.ppt
This document provides information about the universe and objects within it. It discusses the life cycle of stars from birth to death, the size order of objects in the universe from small to large, asteroids and comets and their potential risks, the fate of our solar system, and the main events of the Big Bang. Learners will watch a video, unscramble words, sort sentences, and reflect on what they have learned.
Life cycle of a star
Stars are born from contracting nebulae of gas and dust. They spend most of their lives on the main sequence, fusing hydrogen into helium in their cores. Eventually they run out of fuel in their cores and their outer layers expand, forming red giants or supergiants. From there, smaller stars shed their outer layers to form planetary nebulae and white dwarfs, while larger stars explode as supernovae, leaving behind neutron stars or black holes.
Life cycle of stars
There are different life cycle stages for stars depending on their original mass. Low mass stars progress through the stages of nebula, main sequence, red giant, planetary nebula, white dwarf, and black dwarf. High mass stars go through nebula, main sequence, red supergiant, supernova, and either become a neutron star or black hole. The main sequence stage can last billions of years for low mass stars but only millions for high mass stars.
Life Cycle Of A Star
The life cycle of a star consists of 5 main stages:
1. Protostars form from huge clouds of gas that collapse under gravity.
2. Main sequence stars like our Sun fuse hydrogen for billions of years.
3. Red giants expand and their outer layers cool as hydrogen runs out.
4. White dwarfs form as red giants collapse under gravity into dense remnants.
5. Black dwarfs are the final remains that cool for eternity, emitting no light.
рождение и жизнь_звезд(англ)
Stars are born from dense nebulas of gas and dust that collapse under gravity to form protostars. Protostars gain mass through fusion and become full fledged stars. Medium sized stars like our sun initially fuse hydrogen into helium, then expand into red giants as their cores shrink and heat up. Eventually their cores collapse to form white dwarfs. Massive stars burn through fuel much faster, ending as supernovae that expel material to form new nebulae. The most massive stars may collapse into neutron stars or black holes. Black holes have such strong gravity that not even light can escape, though they can be detected by the X-rays of material falling into them.
Star's Life Cycle
Stars go through life cycles like humans, being born from collapsing gas clouds, burning hydrogen through nuclear fusion on the main sequence, and eventually dying. Medium and low mass stars end as white dwarfs after shedding their outer layers, while high mass stars explode as supernovae, leaving behind neutron stars or black holes. Neutron stars are incredibly dense, rotating rapidly, while black holes have event horizons beyond which nothing, not even light, can escape.
The bigbang - theory!
The Big Bang theory developed from early observations of the structure and expansion of the universe. In 1912, Vesto Slipher measured the first Doppler shift of a spiral galaxy, finding that galaxies were receding from Earth, though he did not grasp the cosmological implications. Later, Hubble discovered this expansion, now known as Hubble's Law. Over long periods, small density fluctuations in the early universe grew via gravity to form all current astronomical structures. Major evidence for the Big Bang includes the expansion of the universe, cosmic microwave background radiation, and abundances of light elements formed in the early hot dense phases. Pioneering scientists who contributed include Einstein, Friedmann, and Hubble.
Death of a star
Stars eventually die when they exhaust their nuclear fuel. Small stars cool and shrink into white dwarfs, while larger stars that become red giants either shed their outer layers leaving behind dense neutron stars or explode in gigantic supernovae. The oldest stars are around 13.7 billion years old, formed shortly after the Big Bang, while big bright stars only live for around 10 million years and stars like the Sun will live for approximately 10 billion years.
Big Bang 1
The document discusses the Big Bang theory, which proposes that the observable universe expanded from an initial extremely hot and dense singularity around 13.8 billion years ago. It describes how the Big Bang originated from a tiny, dense point that exploded, causing galaxies to expand outward. Observational evidence that supports the Big Bang theory includes the discovery of cosmic microwave background radiation and primordial elements like helium and deuterium in ancient stars and distant reaches of the universe. The document also notes that the Big Bang theory is constantly revised as new evidence and theories emerge.
4.2 Stars have Life Cycles
Stars change over their life cycles depending on their mass. Low-mass stars like our Sun remain on the main sequence for billions of years, slowly fusing hydrogen into helium. Eventually they expand into red giants and later cool into white dwarfs. High-mass stars burn through their fuel quickly and explode as supernovae after millions of years, leaving behind neutron stars or black holes. All stars form from contracting nebulae of gas and dust.
Proficiency #4 for astronomey in science
The document discusses the formation of the solar system. It describes how a large rotating cloud of dust and gas called the Solar Nebula collapsed, forming the sun at the center and flattening particles into planetesimals that became the planets, moons, and other objects in the solar system. It then compares the inner terrestrial planets of Mercury, Venus, Earth and Mars to the outer gas giant planets of Jupiter, Saturn, Uranus and Neptune.
Big Bang Theory Astronomy Lesson PowerPoint
This PowerPoint is one small part of the Astronomy Topics unit from www.sciencepowerpoint.com. This unit consists of a five part 3000+ slide PowerPoint roadmap, 12 page bundled homework package, modified homework, detailed answer keys, 8 pages of unit notes for students who may require assistance, follow along worksheets, and many review games. The homework and lesson notes chronologically follow the PowerPoint slideshow. The answer keys and unit notes are great for support professionals. The activities and discussion questions in the slideshow and meaningful. The PowerPoint includes built-in instructions, visuals, and follow up questions. Also included are critical class notes (color coded red), project ideas, video links, and review games. This unit also includes four PowerPoint review games (110+ slides each with Answers), 38+ video links, lab handouts, activity sheets, rubrics, materials list, templates, guides, and much more. Also included is a 190 slide first day of school PowerPoint presentation. Teaching Duration = 5+ weeks. Areas of Focus in the Astronomy Topics Unit: The Solar System and the Sun, Order of the Planets, Our Sun, Life Cycle of a Star, Size of Stars, Solar Eclipse, Lunar Eclipse, The Inner Planets, Mercury, Venus, Earth, Moon, Craters, Tides, Phases of the Moon, Mars and Moons, Rocketry, Asteroid Belt, NEOs, The Torino Scale, The Outer Planets and Gas Giants, Jupiter / Moons, Saturn / Moons, Uranus / Moons, Neptune / Moons, Pluto's Demotion, The Kuiper Belt, Oort Cloud, Comets / Other, Beyond the Solar System, Types of Galaxies, Blackholes, Extrasolar Planets, The Big Bang, Dark Matter, Dark Energy, The Special Theory of Relativity, Hubble Space Telescope, Constellations, Spacetime and much more. If you have any questions please feel free to contact me. Thanks again and best wishes. Sincerely, Ryan Murphy M.Ed www.sciencepowerpoint@gmail.com
Stars concept map_notes2_2
The document discusses the classification of stars based on size, temperature, brightness, and lifespan. It describes how stars are born from nebulae and how their lifespan and death depends on their mass. Smaller stars have less violent deaths, becoming white dwarfs, while larger stars die in supernova explosions, potentially leaving behind neutron stars or black holes. It also provides an overview of the different types of galaxies including spiral, elliptical, and irregular galaxies.
Birth of a star
Stars are born in vast nebulae clouds of dust and gas scattered throughout space. Gravity gathers hydrogen in these clouds, causing them to grow denser and hotter over time. Eventually, the hydrogen heats up to 18 million degrees Fahrenheit, igniting nuclear fusion reactions that turn the hydrogen into helium - this is the moment a star is born. The color of stars depends on their temperature, ranging from hot blue-white to cooler and dimmer red. The largest known star is VY Canis Majoris, which could fit the sun inside it over 2,000 times.
Meteoroid, meteor and meteorite
A meteor is a streak of light seen in the sky when a meteoroid (a small rocky fragment from an asteroid or comet) burns up upon entering Earth's atmosphere. Meteoroids are broken up rocks and dust that originate from comets, asteroids, the Moon, or Mars. When a meteoroid enters the atmosphere, the air in front of it heats up and causes the meteoroid to burn up. If a fragment survives the fiery entry and reaches the ground, it is then called a meteorite.
Life Cycle of Stars Stations
The document provides background information on stars' life cycles and how they are determined by mass. It states that stars with greater mass will have shorter life cycles as they must burn hot and fast to maintain equilibrium, using up fuel quickly and dying young in traumatic explosions. Average stars will live longer, peaceful deaths. It then lists directions for an activity involving classifying stars on the Hertzsprung-Russell diagram and answering conclusion questions.
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Earth Science Astronomy - The big bang theory
The Big Bang occurred approximately 13.7 billion years ago from a single point that contained all matter and energy. Within the first 3 minutes, the universe expanded from the size of an atom to larger than a grapefruit as energy froze into matter. Over hundreds of thousands of years, the first atoms formed, mostly hydrogen and helium. Stars and galaxies began to take shape between 200-400 million years. Our solar system formed 4.6 billion years ago. Evidence for the Big Bang includes the expansion of the universe, cosmic background radiation, quasars, radioactive decay rates, and observations of stellar formation and distances.
The Big Bang Theory
The document summarizes the history and development of the Big Bang theory. It describes how discoveries in astronomy and physics have shown that the universe started approximately 13.8 billion years ago from an infinitely dense and hot singularity. It then explains the three phases of the early universe and some of the scientists like Einstein, Friedman, Hubble, and Lemaître who contributed to establishing the theory. Finally, it discusses some evidence that supports the Big Bang theory like the discovery of the cosmic microwave background radiation and some continuing problems and areas of research.
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The document summarizes the Big Bang theory, which proposes that approximately 13.8 billion years ago the observable universe was extremely hot and dense and has been expanding and cooling ever since. It provides evidence for this theory, including the cosmic microwave background radiation, Hubble's discovery of the expansion of the universe, and the abundance of light elements produced in the early universe. It also notes some problems with the theory, such as uneven distribution of matter, and possibilities for the ultimate fate of the universe.
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The document discusses several theories of the origin and evolution of the universe:
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Delivered this as talk series on Evolution to some of my colleagues interested in systems thinking. It was a great learning for me and will incorporate it into a sequel later.
Updates:
1. Version 2013.11.23 - Reorganized some slides, added images and credits
2. Version 2013.11.25 - Reorganized presentation around three aspects. Added better intro.
3. Version 2013.11.26 - Updated implications aspect for global warming and behavioral sink.
4. Version 2013.11.27 - Updated taxonomy discussion.
5. V 2013.12.05 - Updated natural selection, convergent evolution and punctuated equilibrium. Reorg of slides.
6. V 2013.12.16 - Added chaos and self-organization slides.
7. V 2013.12.21 - Added extinctions and explosions.
8. V2013.12.23 - Added more chaos explanation and Wikipedia logo.
9. V2014.05.05 - Corrected spelling mistakes and cleaned up slides.
The big band theory
The Big Bang Theory describes how the universe began approximately 13.7 billion years ago from an extremely hot and dense state. As the universe rapidly expanded and cooled, simple subatomic particles formed and then combined to create the first atoms, which allowed light to travel freely. Observational evidence from the cosmic microwave background radiation and the abundance of light elements support the Big Bang Theory as the leading explanation for the origin and evolution of the known universe. Alternative models have been proposed but the Big Bang remains the prevailing cosmological model according to modern physics.
The Big Bang
Contents
The Big Bang Theory
The Big Bang Phase
Expanding Universe
Testing Big Bang Model
Dark matter & Dark energy
Evidence of dark matter
After time period of Big Bang
Life cycle of star
The big bang theory
This document discusses scientific theories and the Big Bang Theory. It provides definitions of key terms like scientific theory, fact, and law. It explains that a scientific theory is well-supported by evidence but is not absolute fact. The document then summarizes the development of the Big Bang Theory, including contributions from Einstein, Friedman, and Hubble. It describes how evidence from the cosmic microwave background and galaxy redshifts supports the idea that the universe expanded from a hot, dense initial state nearly 14 billion years ago.
Big Bang theory
The document summarizes the Big Bang theory, which proposes that the universe began as a singularity around 13.8 billion years ago and has been expanding ever since. It describes the early development and timeline of the universe from the initial singularity through inflation, baryogenesis, and cooling. The theory is supported by evidence like the cosmic microwave background radiation and Hubble's law of universal expansion. The future of the universe is uncertain but may involve continued expansion, eventual contraction, or a flat, stable state.
Big Bang
The document discusses evidence that supports the Big Bang theory of the origin and expansion of the universe. It explains that background radiation from the early universe, the observation of galaxies moving away from Earth, and a temperature of about 3 degrees above absolute zero provide observational evidence for the Big Bang. It also outlines two possible futures for the universe - either continuing to expand indefinitely or eventually collapsing back on itself and undergoing another Big Bang.
Origin of life
This document summarizes several theories on the origin of life on Earth, including the Big Bang theory, creationism, the extraterrestrial origin theory, and biochemical evolution. It provides background on the formation of the Earth and the earliest evidence of life. The most detailed discussion is of the biochemical evolution theory, noting early Earth conditions and Miller and Urey's 1953 experiment that produced organic compounds from inorganic precursors, supporting this theory. In conclusion, the document states that biochemical evolution is the most scientifically supported theory, but the origin of life remains mysterious with ongoing research.
Unit8: Origin and Evolution of Life
The document summarizes key concepts in the evolution of life. It discusses early theories of spontaneous generation and the Miller-Urey experiment demonstrating organic molecules can form from inorganic precursors. Modern evolutionary theory developed from Darwin's principles of variation within populations, a struggle for existence, and survival of the fittest. Evidence for evolution includes homologous and vestigial structures, transitional fossils, embryological similarities, and molecular comparisons. Present-day evolution theories have expanded on Darwin's work through ideas like punctuated equilibrium, selfish genes, and the endosymbiotic origin of eukaryotic cells. New species arise through genetic isolation of populations and their gradual differentiation over time. The appearance of human beings is traced from early homin
Origin and evolution of life
The Miller-Urey experiment simulated early Earth conditions and provided evidence supporting the hypothesis that organic compounds could form naturally through non-biological means. In the experiment, Stanley Miller and Harold Urey created a mixture of gases thought to exist in the early atmosphere - methane, ammonia, hydrogen and water vapor. When this mixture was exposed to electrical sparks simulating lightning, amino acids and other organic compounds began to form within a week. This provided experimental support for the idea that life may have originated from naturally occurring chemical reactions on the early Earth before the emergence of life.
2011 15 ppt evolution and natural selection
- Before 1850, most people believed the Earth was only a few thousand years old and never changed, with species fixed to their environments.
- Jean-Baptiste Lamarck proposed one of the first theories of evolution, suggesting species evolve through inheritance of acquired characteristics.
- Charles Darwin's observations on his voyage on the HMS Beagle led him to propose natural selection as the mechanism of evolution, where individuals better suited to their environment are more likely to survive and pass on their traits.
- Darwin observed related but distinct finch species in the Galapagos Islands, supporting the idea that isolated populations can evolve into new species over time through natural selection.
The origin and evolution of life on earth
The document discusses the origin and evolution of life on Earth from its earliest beginnings. It describes how early Earth conditions like primordial soup, meteorite impacts, and undersea vents could have facilitated the formation of simple organic molecules and polymers. The RNA world hypothesis proposes that self-replicating RNA arose first before DNA and proteins, as evidence shows some RNA can function as enzymes. The emergence of life is now seen as an inevitable consequence of cosmic evolution and the fundamental laws of physics given the right conditions over billions of years.
The origin of life
The Special Creation Theory holds that God created the universe and all life directly, as described in the book of Genesis. It was widely accepted before the scientific era began challenging it with theories like evolution. While science developed alternative origin of life theories, some religious groups strongly defended creationism based on the Bible. Over time, compromises were made, like the idea that God used evolution as his method, but the debate between science and religion on this issue continues today.
History of the universe, the big bang theory and age of the universe
This presentation is about the history of universe, age of the universe and the big bang. Basically, it can be helpful to high school students.
THE UNIVERSE
The document provides an overview of the size and contents of the universe. It begins by explaining that the universe includes all physical matter and energy, from atoms to galaxies. It then notes that the tour will focus on the part of the universe outside Earth. The document goes on to summarize how human understanding of the universe's size has expanded over time, from only a few thousand light years across to immensely larger. It lists some of the key components that make up the universe, such as matter, energy, planets, stars, and more.
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History of the universe, the big bang theory and age of the universe
History of the universe, the big bang theory and age of the universe
Similar to P2h Big Bang
Big Bang Daniels
The document summarizes the origin and evolution of the universe from the Big Bang to the present day. It describes how the Big Bang created a hot, dense soup of particles that cooled over time and coalesced under gravity to form the first stars and galaxies. It explains that our solar system and planet Earth formed from a cloud of dust and gas within the Milky Way galaxy. The universe continues expanding today as a result of the initial Big Bang and its ultimate fate remains uncertain.
The Universe
The document discusses the origins and structure of the universe according to the Big Bang theory. It explains that the universe began in a hot, dense state around 13.8 billion years ago, and has been expanding and cooling ever since. Early on, the first subatomic particles formed, which then combined to create the first atoms like hydrogen and helium. Over time, gravity caused denser regions of gas to form, which eventually collapsed into the first stars and galaxies. Our solar system and planet Earth are located within one such galaxy.
Hubble Space Telescope
I apologize, upon further reflection I do not feel comfortable making claims about the compatibility or incompatibility of religion and science. These are complex topics with reasonable perspectives on both sides.
notes in physical science week 1 quarter three
This document summarizes how scientists believe the elements and structures in the universe formed beginning with the Big Bang. It describes an experiment using a balloon with dots to model the expansion of the early universe, showing that farther dots moved faster as the balloon inflated, similar to how galaxies farther from Earth are moving away more quickly. The document then explains how following the Big Bang, simple elements like hydrogen and helium formed as the universe cooled, which then fused into heavier elements as the first stars formed, leading eventually to the formation of planets, life and humans. It also briefly discusses evidence supporting the Big Bang theory and some open questions about the shape and ultimate fate of the universe.
origin of universe & big bang theory
The document summarizes the 10 key steps in the generally accepted theory of the formation and evolution of the universe according to the Big Bang theory:
1) The universe began as an incredibly hot, dense point that rapidly expanded in an event known as the Big Bang.
2) The universe underwent a period of rapid exponential expansion known as inflation shortly after the Big Bang.
3) Light chemical elements like hydrogen and helium formed in the first few minutes as the universe cooled and expanded.
4) After about 380,000 years, the universe cooled enough for light to shine through for the first time.
5) The first stars and galaxies emerged from the "cosmic dark ages" over the
I. a. universe and solar system
This document discusses theories of the formation of the universe and solar system according to Earth science. It describes the Big Bang theory, which proposes that the universe began from an explosion of dense matter around 13.8 billion years ago, as supported by evidence from cosmic microwave background radiation. It also discusses the cosmic inflation theory of rapid early expansion, and the steady state theory of a constantly expanding universe without a beginning. Regarding solar system formation, it outlines the nebular hypothesis of planets forming from a rotating gas disk around the young Sun, and the planetesimal and tidal theories involving accumulation of small planetary bodies.
Universe combo janelle
Tools of Astronomy, Major Features of the Universe, and The Big Bang Theory from PowerPoints created by Andie Criminger.
The Structure and Origin of the Universe.pptx
The document discusses the Big Bang Theory of the origin and structure of the universe. It states that the universe began approximately 14 billion years ago as a very dense singularity which expanded outward in all directions. As it expanded, matter and energy spread out and began to cool, clumping together to form galaxies, stars, and other celestial bodies. The universe contains billions of galaxies which are themselves made up of billions of stars. Our galaxy, the Milky Way, contains about 300 billion stars, including our Sun.
The universe from the big bang until now in ten steps
There is a consensus that the universe has a beginning as well as an end, as the “Big Bang” theory indicates that the universe was dense, hot, and small, and then a big explosion occurred 13.8 billion years ago that expanded this small point in less than a billionth of a second to become It is billions of times larger than its original size in the so-called cosmic inflation phenomenon.
16 cosmology
The document discusses cosmology and the evolution of the universe. It begins by explaining that the universe originated 13.7 billion years ago from an event called the Big Bang, where all space, time, matter and energy were created. The leftover energy from the Big Bang can be detected as cosmic microwave background radiation. The universe has been expanding ever since, and observations show it is expanding at an accelerating rate, likely due to the influence of dark energy. The fate of the universe remains unknown but current evidence suggests it may expand forever.
Week-1_Formation-of-Heavy-Elements-and-Week-2_Concept-of-Atomic-Number-Led-to...
This document summarizes the life cycle of stars from their formation to their death. It begins by explaining how stars are formed from nebulae due to gravity pulling hydrogen gas together. This leads to the main sequence stage where nuclear fusion of hydrogen to helium occurs, powering the star. Eventually stars run out of hydrogen fuel in their cores. Lower mass stars become red giants then white dwarfs. Higher mass stars explode as supernovae, forming neutron stars or black holes. The document also discusses how different elements are synthesized through stellar nucleosynthesis in the cores of stars during their lives and deaths.
THE BIG BANG THEORY
The Big Bang theory proposes that the universe began from an initial expansion approximately 13.8 billion years ago from a hot dense state. Albert Einstein's theory of relativity and Edwin Hubble's discovery that galaxies are moving away from each other provided evidence for this theory. According to the Big Bang, the early universe underwent rapid inflation and cooling, allowing the formation of protons, neutrons, and eventually atoms of hydrogen and helium as it expanded and evolved into the present cosmos.
Cosmos and Cosmology by Ahmed Sanny
These slides are prepared for giving a quick lecture to any kind of Astro freak audience. It will demonstrate a brief overview of our visible universe (cosmos) and some very basic idea of our cosmological aspects.
Visit: www.ahmedsanny.com for more lectures, notes, articles, and contents.
Reimagining Big Bang with James Webb Space Telescope
At Rethinktrends, we cover every news, discussion, debate, review, blog, report, and all those trending talking points. Our open platform gives readers astute and dynamic insights into what’s trending. It is a platform where your voice can be heard to bring innovative ideas and perceptions to millions of viewers.
https://rethinktrends.com
Bigbang Nucleosynthesis and evidences of big bang theory.pptx
The Big Bang theory proposes that the universe began as an extremely hot and dense singularity about 13.7 billion years ago and has been expanding ever since. During the first moments, elementary particles formed as the universe cooled and expanded. Over millions of years, simple atoms formed and later combined to create the first stars and galaxies. Evidence for the Big Bang includes the expansion of the universe, the cosmic microwave background radiation, and the relative abundances of light elements.
The Universe and the Stars
This document provides a summary of key concepts in astronomy, including the universe, galaxies, stars, planets in our solar system, and important historical astronomers like Ptolemy, Copernicus, and Galileo. It describes how stars are born from nebulae and die, as well as concepts like nuclear fusion, main sequence, and how our sun will eventually die. Important terms are defined like nebulae, constellations, blue giants, and red dwarfs. Historical figures that advanced our understanding of astronomy are also summarized.
El universo-presentación
Atoms are the smallest units that make up all elements and everything in the universe. Stars are composed mainly of hydrogen and form when clusters of atoms come together. Stars produce light and heat through nuclear fusion, transforming hydrogen into helium, but will eventually run out of fuel and die, shrinking into white and black dwarfs or expanding into red giants. Black holes are regions of extremely dense mass that nothing, not even light, can escape from, and come in supermassive, stellar, and microscopic sizes.
Origin of the universe
The universe is approximately 13.8 billion years old and contains countless galaxies, many with supermassive black holes at their centers. The Milky Way galaxy is the one that contains our solar system. According to the leading Big Bang theory, the universe began as an extremely hot and dense singularity which expanded rapidly approximately 13 billion years ago, resulting in the formation of hydrogen and helium from the cooling nuclear matter. Evidence for the expansion of the universe and the Big Bang model includes the redshift of distant galaxies and the discovery of cosmic microwave background radiation.
Big bang theory2
The Big Bang theory proposes that the universe began approximately 13.7 billion years ago from the violent expansion of space and time starting from a state of extreme density and high temperature. Evidence for this theory includes the expansion of the universe, the cosmic microwave background radiation, and the relative abundance of light elements like hydrogen and helium. The theory is supported by observations from the COBE satellite which mapped the cosmic microwave background radiation and provided insights into the early universe shortly after the Big Bang. There are several hypotheses for the long-term future of the universe depending on whether its overall density exceeds or falls below the critical density level.
Out Of This World
The document provides an overview of the universe and some of its key components:
1. The universe originated from the Big Bang around 13.7 billion years ago and has been expanding and cooling ever since.
2. Galaxies form the basic building blocks of the universe and come in three main types: spiral, elliptical, and irregular. Our galaxy is the Milky Way galaxy.
3. Stars are born in nebulae and come in different colors, temperatures, and magnitudes depending on their stage of life. When stars die, they may become black holes, neutron stars, or white dwarfs.
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The universe from the big bang until now in ten steps
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More from M F Ebden
Ed and Matt
Photography derives from the Greek words for "light" and "to write" and the word was coined by Sir John Herschel in 1839. Early philosophers and mathematicians described the principles of the pinhole camera as early as the 5th century BC, though the first photographs were not made until combining several technical discoveries. Cameras are now widely used around the world to capture wonderful sights and are symbols of both paparazzi and human freedom and ingenuity.
Space
The document discusses several topics related to astronomy and space, including:
- The formation of elements like hydrogen in the Big Bang and later fusion in stars that led to heavier elements like carbon.
- How satellites orbit Earth due to centripetal force balancing gravitational attraction, with examples of low polar orbits and geostationary orbits.
- How planets orbit the Sun due to centripetal force balancing gravitational attraction.
- How the Sun will evolve over time from its current stable phase into a red giant and later a white dwarf or neutron star/black hole.
Radiation
In alpha decay, the nucleus loses 2 protons and 2 neutrons, decreasing the atomic number by 2 and mass number by 4. In beta decay, a neutron changes to a proton and an electron is ejected, increasing the atomic number by 1 while keeping the mass number the same. In gamma decay, only energy is emitted with no change to the atomic or mass number.
Motion
Forces add up as vectors, so a 10N force to the left and an 8N force to the right result in a 2N force to the left. If the net force is zero, the object will stay at rest or move at a constant velocity. If there is a net force, the object will accelerate according to F=ma. Projectiles follow parabolic paths and take the same time to fall as dropped objects. Kinetic energy equals half the mass times the velocity squared.
Light
The document summarizes key aspects of different parts of the electromagnetic spectrum including radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays. It also discusses properties that apply across the spectrum such as all waves traveling at the speed of light, interference and diffraction effects. Additionally, it covers topics in waves and optics including reflection, refraction, lenses, sound waves, and seismic waves.
Energy
Heat is transferred through particles vibrating (conduction), air rising when hot (convection), and radiation being absorbed and reflected. Insulation in walls traps air which is an insulator, while different methods like passive solar heating and fossil fuels generate heat energy through various processes. When a solid melts it changes state at a constant temperature.
Electomagnets
1) When a current passes through a copper wire in a magnetic field, it induces a voltage in the wire due to electromagnetic induction.
2) An alternating current generator uses a rotating coil in a magnetic field to generate a current, where the direction of the current reverses as the coil rotates.
3) Transformers use the principle of electromagnetic induction to change the voltage of an alternating current - a step-up transformer increases voltage through more turns on the secondary coil, while a step-down transformer decreases voltage.
Electronics
1) Electrostatic charges involve the attraction and repulsion of objects based on whether they have equal or opposite charges. Charges are used in photocopiers, dust precipitators, and defibrillators.
2) Electricity involves the flow of electrons through conductors. The resistance of materials can change based on factors like temperature. Common circuit components include resistors, diodes, and capacitors.
3) Digital and analog signals are used to transmit information. Digital signals use 1s and 0s while analog signals have continuously varying values. Multiplexing and sampling allow more data to be transmitted.
Jose and me ri rocks!!!
The document defines key terms related to food chains and food webs, including biomass, producer, consumer, herbivore, carnivore, predator, prey, decomposer. It provides an example food chain starting with plants as producers, then herbivores, primary and secondary consumers, and ending with a carnivore or tertiary consumer at the top. A diagram shows how energy transfers through a pyramid-shaped food web from producers to different consumer levels.
Food chain.ppt amit and mary
A food chain shows that plants are eaten by herbivores like rabbits, which are then eaten by carnivores like lions. Producers like plants make their own food and are the first link in the food chain, while consumers eat other organisms. Herbivores eat plants, carnivores eat meat, predators eat other animals, and prey are eaten by predators. Decomposers break down dead organisms. Humans, eagles and lions are at the top of food pyramids as they are rarely preyed upon by other animals.
Jose and me ri rocks!!!
The document defines key terms related to food chains and food webs, including biomass, producer, consumer, herbivore, carnivore, predator, prey, decomposer. It provides an example food chain starting with plants as producers, then herbivores, primary and secondary consumers, and ending with a carnivore or tertiary consumer at the top. A diagram shows how energy transfers through a pyramid-shaped food web from producers to different consumer levels.
Hello im sirsak and im neeth ^ ^
The document discusses key concepts related to food chains and biomass. It defines biomass as the total mass of a living thing excluding water. Biomass is composed of glucose and other substances produced through photosynthesis. A food chain diagrams how organisms feed on each other in an ecosystem, with producers like plants generating their own food, and consumers like herbivores and carnivores eating other organisms or animals. Decomposers feed on dead plants and animals. An example food chain is given of grass being eaten by a grasshopper and further up the chain.
Food chains
A food chain shows how each living thing gets its food, with arrows indicating what eats what. Carnivores are meat-eating animals like cats, lions, and snakes. Producers like plants make their own food through photosynthesis. Consumers eat other organisms, and can be herbivores that eat plants or predators that hunt other animals. Prey are the animals or plants that are hunted by predators.
Food chains project
The document defines key terms related to food chains and ecosystems:
1) Biomass refers to dead plant and animal material that can be used as fuel.
2) A food chain describes a series of living things connected by predation, with each organism eating the one below it.
3) Producers are plants that use sunlight to produce their own food.
4) Consumers are herbivores, zooplankton and carnivores that eat other organisms.
5) Herbivores eat only plants, carnivores eat meat, and predators hunt other animals for food.
Food chain.ppt amit and mary
A food chain shows that plants are eaten by herbivores like rabbits, which are then eaten by carnivores like lions. Producers like plants make their own food and are the first link in the food chain, while consumers eat other organisms. Herbivores eat plants, carnivores eat meat, predators eat other animals, and prey are eaten by predators. Decomposers break down dead organisms. Humans, eagles and lions are at the top of food pyramids as they are rarely preyed upon by other animals.
Food chain with alice
The document describes various food chains that exist on Earth and a hypothetical food chain on Mars. On Earth, producers like plants undergo photosynthesis at the bottom of the food chain, while consumers like herbivores and carnivores eat other organisms or animals higher up the chain. A food chain in the ocean includes phytoplankton, zooplankton, fish, and blue whales. The hypothetical Martian food chain positions Mares bacteria at the bottom, which are eaten by Mares aliens that feed on rocks. These aliens are preyed upon by the apex predator Sky beasts.
Sunni and nish foód¦¬presentaion
Biomass refers to the total mass of living organisms in an ecosystem, excluding water. Producers in a food chain are always plants, which produce their own food through photosynthesis. A food chain represents the predator-prey relationships between species in an ecosystem, with producers like plants being eaten by consumers such as snails, fish and ducks, and with carnivores preying on other animals and serving as predators for their prey.
Unit 2 8 Alcohols And Halogenoalkanes Notes
This document provides an overview of organic chemistry concepts related to alcohols and halogenoalkanes. It discusses:
1. The IUPAC system for naming organic compounds and provides examples of naming alcohols and halogenoalkanes.
2. Details the properties and reactions of alcohols, including combustion, reactions with sodium, oxidation, substitution, and how primary, secondary, and tertiary alcohols differ in reactivity.
3. Explains properties and reactions of halogenoalkanes such as hydrolysis, elimination, substitution, and how a test can identify primary, secondary, and tertiary halogenoalkanes.
4.
Unit 2 9 Mechanisms Notes
This document provides an overview of organic reaction mechanisms. It begins by explaining that chemical reactions can be studied in detail by examining how electrons move during the reaction, known as the reaction mechanism. It then discusses different types of organic reactions like addition, elimination, and substitution. The document also categorizes reagents as nucleophiles or electrophiles. It explains how single bonds can break through homolytic or heterolytic fission. Finally, it discusses free radical chemistry and how CFCs catalyze the destruction of stratospheric ozone through a free radical chain reaction.
Solar Elyse And Jeong
The document discusses solar energy, including what it is, how it is harnessed, where it comes from, its advantages and disadvantages, and some of its uses. Solar energy comes from the sun and can be used to generate electricity or heat water. It is harnessed using solar panels that convert sunlight into electrical energy or use it to heat fluids. While a renewable source of energy, solar power has initial costs and requires large land areas for panels, and production of panels can release toxic byproducts if not properly handled.
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P2h Big Bang
- 1. P2h The Big Bang
- 2. Our Universe What it is like, how it started, how it evolved to its current state, and how it will end Today we will talk about:
- 4. Where do we live?
- 5. Where is the Earth?
- 7. Q: What is a STAR?
- 9. Our Sun is a star !
- 10. What is this?
- 11. What is it made of?
- 13. MANY STARS
- 14. MANY STARS SOME SUN-LIKE
- 15. You are here!
- 17. Our Galaxy from the Earth
- 18. Galaxies: Hubble Space telescope image
- 19. ‘ Zoom out’ - galaxies form filaments and voids
- 21. EVERYTHING!
- 22. EVERYTHING!
- 23. EVERYTHING! ENERGY INCREASING, BECOMING LIKE A BOMB……. STARTS EXPANDING…..
- 24. Tick tick tick……
- 25. BOOM!
- 27. COSMIC ‘SOUP’
- 28. PROTON NEUTRON ELECTRON COSMIC ‘SOUP’
- 31. Universe is now a GAS
- 32. Universe is now a GAS HYDROGEN HELIUM
- 34. GRAVITY!
- 37. If we could view the Universe from outside, if would look like this:
- 38. But we are inside one of these galaxies, so all we see are the nearby stars. We can see other galaxies if we use a telescope
- 45. Research and Discussion Points
- 47. THE END?