Unit 6
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Our solar system is formed of the Sun and objects like planets and asteroids that move around it. The Earth, a spherical planet with three layers including the geosphere and atmosphere, rotates on its axis and orbits the Sun. The Moon is the Earth's only natural satellite, and its phases and gravitational pull cause lunar eclipses and ocean tides.
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Galaxies contain billions of stars, gas and dust held together by gravity. The Milky Way galaxy is our galaxy and contains over 100 billion stars. Galaxies can be elliptical or irregular shapes. Our solar system consists of the sun and eight planets plus dwarf planets orbiting the sun. Planets can be inner planets like Earth that orbit close to the sun or outer planets like Jupiter that orbit farther from the sun. A light year is the distance light travels in one year and galaxies can be many light years across. The zodiac signs have roots in ancient cultures and are based on Greek myths. Constellations are groupings of stars named by ancient astronomers.
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Galaxies contain billions of stars, gas and dust held together by gravity. The Milky Way galaxy is our galaxy and contains over 100 billion stars. Galaxies can be elliptical or irregular shapes. Our solar system consists of the sun and eight planets plus dwarf planets orbiting the sun. Planets can be inner planets like Earth that orbit close to the sun or outer planets like Jupiter that orbit farther from the sun. A light year is the distance light travels in one year and galaxies can be many light years across. The zodiac signs have roots in ancient cultures and are based on Greek myths. Constellations are groupings of stars named by ancient astronomers.
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c. Compare and contrast the planets in terms of Size relative to the earth Surface and atmospheric features Relative distance from the sun Ability to support life
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- The heliocentric model with the Sun at the center, proposed by scientists like Copernicus and Galileo, is now accepted over the earlier geocentric model with Earth at the center.
Basics of space and satellite communication
This document provides an overview of basics related to space and satellite communication. It covers topics including space, planets, stars, satellites, the solar system, galaxy, asteroids, and orbits, revolution and rotation. Key points include that space is everything outside Earth's atmosphere, including gas and dust between stars and planets; planets revolve around stars on elliptical orbits; stars produce light and heat from nuclear reactions; satellites revolve around planets on fixed orbits and can be natural or artificial bodies.
Geography – the earth in our solar system
The document summarizes key components of the solar system, including the sun, eight planets, Earth and its moon, asteroids, and meteoroids. It notes that the sun is at the center of the solar system and is the source of heat and light. It describes the eight planets in order from the sun and some of their characteristics. It provides details on Earth, including that it is the third planet from the sun and the only known to support life. It also summarizes that the moon is Earth's only natural satellite. Asteroids are described as tiny bodies located between Mars and Jupiter, while meteoroids are small rocks that sometimes enter Earth's atmosphere.
UNIT 1. THE EARTH AND THE UNIVERSE
The universe is made up of all matter and space, including astronomical objects like stars, planets, satellites, comets, and asteroids. Originally, all matter was in one place and exploded in an event called the Big Bang, spreading matter outwards to form the astronomical objects seen today. Galaxies contain billions of stars and objects, including the Milky Way galaxy which contains our solar system orbiting the Sun along with eight planets. The document goes on to define stars, planets, satellites, asteroids, comets, and meteors. It also describes geocentric and heliocentric models of the solar system and provides details about the Earth, its rotation, revolution, and the cause of seasons and the moon's phases.
basicastronomy-physicalscience-200202141650.pptx
This document discusses celestial motions and models of the universe. It describes:
1) The celestial sphere, an imaginary sphere where stars, sun and planets appear to be embedded as seen from Earth. Important points on this sphere include the north and south celestial poles and the celestial equator.
2) Motions like the sun's apparent yearly path (ecliptic), solstices, equinoxes, and precession are caused by Earth's rotation and revolution.
3) Early models including Ptolemy's geocentric model with celestial spheres and epicycles, and Copernicus' heliocentric model, were eventually supported by Kepler's laws of planetary motion.
basicastronomy-physicalscience-200202141650.pptx
1. The document describes celestial motions like the celestial sphere, equator, ecliptic, solstices, equinoxes, and constellations. It also discusses models of the universe from ancient Egyptians to Copernicus, including geocentric models of Pythagoras, Ptolemy, and Copernicus' heliocentric model.
2. The second part of the document covers Kepler's laws of planetary motion - that planets move in ellipses with the Sun at one focus, areas are swept in equal times, and the square of periods is proportional to the cube of distances. It also discusses problems applying Kepler's laws.
3. The document provides a concise overview of important concepts
The earth in the solar system
The PPT dealing with 6th standard geography in CBSE syllabus. Its including certain activities which develop interest to this topics.
The universe 3ºprimary
The document discusses the universe, our solar system, and celestial bodies. It begins by explaining that the universe began in the Big Bang about 14 billion years ago and is made up of all existing celestial bodies like planets, stars, and galaxies. It then discusses our solar system and Milky Way galaxy. It describes celestial bodies as objects that can be seen in the sky, categorizing them as luminous or non-luminous. Luminous bodies like stars emit their own light while non-luminous planets do not. It also notes that our solar system has eight planets orbiting our star, the Sun.
The earth in the solar system
The document provides information about the Earth and its place in the solar system and universe. It discusses that the Earth is a planet that orbits the Sun. It receives light and heat from the Sun and has one moon. It also describes that the solar system includes the Sun and eight planets that orbit it, as well as asteroids and other smaller objects. Finally, it notes that the solar system is located within the Milky Way galaxy, and the galaxy is part of the wider universe.
2017 Formation of Solar System.ppt
The Solar System formed from a large cloud of dust and gas called a nebula. As the cloud contracted due to gravity, it began to spin faster, flattening into a disk. Small dust grains in the disk provided nuclei that attracted surrounding gas and other particles, eventually growing into planets. Over 100 million years, the planetesimals collided and accumulated material, forming the planets. The larger proto-planets were also able to collect gas to become the gas giant Jovian planets.
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Stars and the solar system/ class8 / science / physics / ncert
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More from Luis Pacheco Hermosilla
Unit 14
Prehistory is divided into the Paleolithic and Neolithic periods. During the Paleolithic, humans were nomadic hunter-gatherers who lived in caves and made tools from stone, bone, and wood to hunt and dress in animal skins. In the Neolithic, humans became sedentary, engaging in farming and creating pottery and fabrics. Historians study important past events using various historical sources like oral traditions, written documents, images, and artifacts to understand prehistory and how human life changed over time.
Unit 13
Spain is a democratic state divided into municipalities, provinces, and 17 autonomous communities. As a member of the European Union, Spain is an economic and political association of 27 European countries. Each autonomous community in Spain divides further into provinces, with Spain containing a total of 50 provinces. In turn, each province contains multiple municipalities. Spain has a parliamentary constitutional monarchy form of national government that separates power among the legislative, executive, and judicial branches. Autonomous communities and cities also have their own regional governments that include a parliament or assembly, government, and court of justice.
Unit 12
The document discusses population trends in Spain. It explains that a population changes due to birth rates, death rates, immigration and emigration. Spain's population has increased significantly due to decreasing death rates and increasing immigration. Population density is calculated by dividing the number of inhabitants by the area's size in square kilometers. Currently, Spain has a population density of 90 inhabitants per square kilometer.
Unit 11
Weather refers to atmospheric conditions over a short period of time, while climate describes conditions over longer periods like years. Climate is influenced by proximity to the equator, altitude above sea level, and nearness to oceans. Spain has several types of climates including Atlantic, Continental, Mediterranean, Continental-Mediterranean, and Mountain climates due to these geographic factors.
Unit 10
The document discusses water on Earth and the hydrography of Spain. Most fresh water is found as ice, in lakes, rivers or underground. Salt water is found in oceans and seas. The movement of water between the Earth and atmosphere is known as the water cycle. Spain has three drainage basins - the Cantabrian basin contains short rivers with abundant water flow, while the Atlantic and Mediterranean basins contain longer rivers with less variable flow. The Canary and Balearic Islands do not have permanent rivers, as water runs across the surface in torrents.
Unit 9
Spanish relief is very mountainous, with coastal areas generally featuring straight cliffs. The most important features are the Meseta central plateau and surrounding mountain ranges, as well as exterior mountains and the Guadalquivir and Ebro Basins. The coastal relief is divided into five regions with varying characteristics. The Balearic and Canary Islands have mountainous terrain and varied coastlines, while Ceuta is hilly and Melilla is flat. A map is a graphic representation of an area that shows it from above and to scale, using colors, symbols, and text to provide information.
Unit 8
Energy comes in different forms like light, heat, mechanical, electrical, chemical, and nuclear. There is a transformation of energy when one form changes into another. Energy sources are natural resources that provide the energy we use, and can be renewable or non-renewable. Non-renewable sources like fossil fuels and radioactive substances are exhausted because they cannot renew themselves, while renewable sources such as the sun, wind, moving water and biomass cannot be exhausted because they renew continually.
Unit 7
All matter has two fundamental properties: volume and mass. Matter can exist in three states - solid, liquid, or gas. Heat causes changes in the state of matter through melting, solidification, evaporation, or condensation as matter is heated or cooled. The use of different materials can cause environmental problems, but these can be avoided by reducing consumption, reusing materials, and recycling.
Unit 5
This document discusses the human interaction systems. It describes the main parts as the sense organs that detect stimuli and send nerve impulses to the nervous system, which interprets them as sensations. The nervous system has two parts, the central nervous system consisting of the brain and spinal cord, and the peripheral nervous system consisting of nerves. The central nervous system sends orders through nerves to effectors, which realize responses like movement. The locomotor system, consisting of muscles, tendons, bones and joints, allows us to move thanks to our skeleton.
Unit 4
The document summarizes key concepts about the respiratory, circulatory, and excretory systems. It explains that breathing allows us to obtain oxygen and excrete carbon dioxide through the respiratory system, including the airways and lungs. It also describes how the circulatory system transports nutrients, oxygen, and waste throughout the body via blood vessels and heart. Blood is composed of plasma and blood cells and its main functions are to transport nutrients/oxygen and defend the body from infection.
Unit 3
The document discusses digestion, the digestive system, feeding and nutrition. It defines digestion as the process where the digestive system breaks down food to obtain nutrients, which are then absorbed in the small intestine, while waste is excreted. It explains that feeding is taking in food, and nutrition involves extracting nutrients from food and oxygen from air, distributing them through the body, and excreting waste. The document categorizes nutrients as proteins, carbohydrates, fats, minerals and vitamins, and notes that carbohydrates and fats provide energy while vitamins and minerals promote health and proteins support growth and vital functions. It emphasizes the importance of a balanced diet containing all nutrients in proper amounts.
Unit 2
Animals are multicellular organisms that feed on other living things as consumers. They have digestive systems made up of organs like the stomach and intestines to take in and digest food. Animals also have systems to take in oxygen, distribute substances throughout the body, and excrete waste residues. They interact with their environment through sense organs that detect stimuli and a nervous system that processes this information and sends instructions to effectors to execute a response.
Unit 1
This document provides an overview of living things, specifically plants. It explains that all living things are made of cells and have three vital functions: nutrition, interaction, and reproduction. It describes the structure of living things from single-celled organisms to multicellular organisms made of tissues, organs, and systems. The document defines plants as multicellular organisms that produce their own food through photosynthesis, do not move but react to changes, and most reproduce using flowers and seeds. It also outlines plants' nutrition process of absorbing water, minerals, carbon dioxide and making carbohydrates using sunlight.
Unit 15
This document provides an overview of science in the ancient world and middle ages. It describes the important early civilizations that appeared including Mesopotamia, Egypt, Greece, and Rome. Life during the middle ages is characterized by Germanic invasions, the rise of feudalism, and people abandoning cities to settle as serfs in the countryside until cities began growing again in the 13th century. Vocabulary terms related to civilization, laws, political systems, and social hierarchies of the time are also defined.
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
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Unit 6
- 1. SCIENCE UNIT 6 THE UNIVERSE AND THE SOLAR SYSTEM
- 2. • The universe and our solar system In the universe there are millions of galaxies formed of thousands of millions of stars. Planets, satellites and other objects move around many of these stars forming solar systems. Our solar system is formed of the Sun and all the planets, satellites and other objects that move around it.
- 4. • The Earth and the Moon • The Earth The Earth is a spherical object that rotates on its axis and orbits the Sun. It is formed of three layers. * The geosphere * The hydrosphere * The atmosphere • The Moon The Moon is the Earth´s only satellite. We see it in different lunar phases. It causes eclipses and tides.
- 6. Lesson vocabulary To form: formar Star: estrellas To move: mover Solar system: sistema solar Earth: Tierra Moon: luna Spherical: esferica To rotate: girar Axis: eje Orbit: órbita Layer: capa Lunar phases: fases lunares Eclipses: eclipses Tides: mareas