Revolution
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Images taken from Earth of other planets have less sharpness and detail than those taken from space due to Earth's atmosphere interfering with photo quality, while images from space are not impacted by an atmosphere. The Earth revolves around the sun, resulting in the four seasons due to changes in the tilt of the Earth and the location of the sun throughout the year.
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atmospheric refraction
Atmospheric refraction is the bending of light as it passes through the atmosphere due to changes in air density with altitude. This causes distant objects to appear elevated, lowered, or shimmering. It also causes advanced sunrise and delayed sunset, the apparent elevation of stars, and the lack of twinkling in planets. Refraction makes the sun appear larger and flattened at sunrise/sunset but circular at noon. It can also create mirages by refracting light to appear as reflected sky.
Solar eclipse
An eclipse occurs when one celestial body blocks light from another body. There are two types of eclipses: solar and lunar. A solar eclipse happens during a new moon when the moon passes between the sun and earth, casting its shadow on earth. Some places experience the sun being fully covered while others only see a partial covering.
ATMOSPHERIC REFRACTION
Atmospheric refraction causes light and electromagnetic waves to deviate from a straight line as they pass through the atmosphere due to changes in air density with altitude. This refraction is responsible for the twinkling of stars and distortions in the shape of the sun at sunrise and sunset. While stars appear to twinkle due to turbulence in the atmosphere refracting light from different layers, planets do not twinkle significantly because they appear as extended sources of light rather than point sources. Atmospheric refraction also causes the sun to be visible for a few minutes before actual sunrise and after sunset, lengthening the period of daylight.
Light.reflection.by.ayush.
The twinkling of stars is caused by atmospheric refraction making the apparent position of stars change slightly as starlight passes through areas of different refractive index in the atmosphere. This causes the amount of light entering the eye to fluctuate, making stars appear to twinkle. Planets do not twinkle as their light comes from an extended source rather than a point source, averaging out the variations. Atmospheric refraction also causes the sun to be visible for a few minutes before actual sunrise and after actual sunset. Scattering of light by water droplets in the atmosphere causes the sky to appear blue and the sun red at sunrise and sunset, with blue light being scattered more. The Tyndall effect demonstrates scattering of light by colloid
Ppt on atmospheric refraction
Atmospheric refraction is the deviation of light as it passes through the atmosphere due to changes in air density with altitude. This causes several optical phenomena including mirages and the apparent shimmering or rippling of distant objects. It also results in the sun appearing before actual sunrise and after actual sunset due to light bending as it passes through changing air densities in the atmosphere. Stars appear to twinkle due to their light continuously refracting as it passes through atmospheric layers of changing density, while planets do not twinkle as much due to their larger apparent size. The sun also appears larger during sunrise and sunset compared to noon due to greater refraction of light through more dense lower atmosphere.
Phenomena of atmospheric refraction
in this ppt there is info about atmospheric refraction.info about scattering of light, rainbow formation, twinkling of stars, cause of refraction of light,laws of refraction, why the sky is blue, why the sun appears red at sunrise and at sunset, why clouds appear white are also given.
Atmospheric refraction ppt
Atmospheric refraction causes several optical phenomena including advanced sunrise and delayed sunset, twinkling of stars, apparent flattening of the sun's disc at sunrise and sunset, and mirages. Refraction occurs when light travels from one medium to another of different densities, such as from air to air of different temperatures in the atmosphere. This causes the light's path to bend and results in the sun appearing above the horizon before actual sunrise or remaining visible after sunset. Stars twinkle due to the fluctuating refractive index of the lower atmosphere bending the starlight. Planets do not twinkle as their larger apparent size averages out the fluctuations. Mirages occur due to variations in the refractive index profile of the atmosphere distorting the appearance
Atmospheric refraction
Refraction is the change in direction of light when passing from one medium to another of different density. Snell's law states that the ratio of sines of the angle of incidence and refraction is equal to the ratio of refractive indices of the two media. Due to refraction, the sun appears above the horizon before actual sunrise and remains visible after sunset. Stars twinkle because their light refracts through our atmosphere, causing their apparent position to fluctuate. Planets do not twinkle as their extended disks average out the effects of refraction. The sun's disk appears flattened at sunrise and sunset due to refraction and mirages caused by variations in the atmosphere's density.
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atmospheric refraction
Atmospheric refraction is the bending of light as it passes through the atmosphere due to changes in air density with altitude. This causes distant objects to appear elevated, lowered, or shimmering. It also causes advanced sunrise and delayed sunset, the apparent elevation of stars, and the lack of twinkling in planets. Refraction makes the sun appear larger and flattened at sunrise/sunset but circular at noon. It can also create mirages by refracting light to appear as reflected sky.
Solar eclipse
An eclipse occurs when one celestial body blocks light from another body. There are two types of eclipses: solar and lunar. A solar eclipse happens during a new moon when the moon passes between the sun and earth, casting its shadow on earth. Some places experience the sun being fully covered while others only see a partial covering.
ATMOSPHERIC REFRACTION
Atmospheric refraction causes light and electromagnetic waves to deviate from a straight line as they pass through the atmosphere due to changes in air density with altitude. This refraction is responsible for the twinkling of stars and distortions in the shape of the sun at sunrise and sunset. While stars appear to twinkle due to turbulence in the atmosphere refracting light from different layers, planets do not twinkle significantly because they appear as extended sources of light rather than point sources. Atmospheric refraction also causes the sun to be visible for a few minutes before actual sunrise and after sunset, lengthening the period of daylight.
Light.reflection.by.ayush.
The twinkling of stars is caused by atmospheric refraction making the apparent position of stars change slightly as starlight passes through areas of different refractive index in the atmosphere. This causes the amount of light entering the eye to fluctuate, making stars appear to twinkle. Planets do not twinkle as their light comes from an extended source rather than a point source, averaging out the variations. Atmospheric refraction also causes the sun to be visible for a few minutes before actual sunrise and after actual sunset. Scattering of light by water droplets in the atmosphere causes the sky to appear blue and the sun red at sunrise and sunset, with blue light being scattered more. The Tyndall effect demonstrates scattering of light by colloid
Ppt on atmospheric refraction
Atmospheric refraction is the deviation of light as it passes through the atmosphere due to changes in air density with altitude. This causes several optical phenomena including mirages and the apparent shimmering or rippling of distant objects. It also results in the sun appearing before actual sunrise and after actual sunset due to light bending as it passes through changing air densities in the atmosphere. Stars appear to twinkle due to their light continuously refracting as it passes through atmospheric layers of changing density, while planets do not twinkle as much due to their larger apparent size. The sun also appears larger during sunrise and sunset compared to noon due to greater refraction of light through more dense lower atmosphere.
Phenomena of atmospheric refraction
in this ppt there is info about atmospheric refraction.info about scattering of light, rainbow formation, twinkling of stars, cause of refraction of light,laws of refraction, why the sky is blue, why the sun appears red at sunrise and at sunset, why clouds appear white are also given.
Atmospheric refraction ppt
Atmospheric refraction causes several optical phenomena including advanced sunrise and delayed sunset, twinkling of stars, apparent flattening of the sun's disc at sunrise and sunset, and mirages. Refraction occurs when light travels from one medium to another of different densities, such as from air to air of different temperatures in the atmosphere. This causes the light's path to bend and results in the sun appearing above the horizon before actual sunrise or remaining visible after sunset. Stars twinkle due to the fluctuating refractive index of the lower atmosphere bending the starlight. Planets do not twinkle as their larger apparent size averages out the fluctuations. Mirages occur due to variations in the refractive index profile of the atmosphere distorting the appearance
Atmospheric refraction
Refraction is the change in direction of light when passing from one medium to another of different density. Snell's law states that the ratio of sines of the angle of incidence and refraction is equal to the ratio of refractive indices of the two media. Due to refraction, the sun appears above the horizon before actual sunrise and remains visible after sunset. Stars twinkle because their light refracts through our atmosphere, causing their apparent position to fluctuate. Planets do not twinkle as their extended disks average out the effects of refraction. The sun's disk appears flattened at sunrise and sunset due to refraction and mirages caused by variations in the atmosphere's density.
Advance sunrise and delayed sunset
The sunrise appears earlier and sunset appears later than the actual positions due to atmospheric refraction of sunlight. As sunlight enters the Earth's atmosphere, it follows a curved path through air of varying density, causing the observer to see the sun two minutes before it reaches the horizon at sunrise and two minutes after it dips below the horizon at sunset. This atmospheric refraction increases the overall duration of daylight by four minutes.
Colourful world 1
For whole video YouTube link : https://youtu.be/AZDKXg5_Oz4
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An Eclipse to Reminisce - Solar Eclipse 2017
On Aug, 21, 2017, will be the first total solar eclipse visible from coast to coast in the United States after almost a century - 99 years to be exact.
Aug 21, 2017 solar eclipse
The document discusses different types of solar eclipses: partial solar eclipses where only part of the sun is blocked by the moon; annular eclipses where the moon appears smaller allowing light to shine around the edges; and total lunar eclipses where the moon passes into the Earth's shadow. It provides information on the next solar eclipse over the US in 2024 and resources from NASA on visualizing and tracing the 2017 eclipse path. Safety tips are outlined for viewing a solar eclipse, including eye protection, layers of clothing, food, water, and first aid supplies.
4 1 solar system
S6E1. Students will explore current scientific views of the universe and how those views evolved.
a. Relate the Nature of Science to the progression of basic historical scientific models (geocentric, heliocentric) as they describe our solar system, and the Big Bang as it describes the formation of the universe.
b. Describe the position of the solar system in the Milky Way galaxy and the universe.
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
d. Explain the motion of objects in the day/night sky in terms of relative position.
e. Explain that gravity is the force that governs the motion in the solar system.
f. Describe the characteristics of comets, asteroids, and meteors.
Solar eclipse2017
This document provides information about viewing the total solar eclipse that will occur on August 21, 2017 across the United States. It details what viewers in Georgia will be able to see, even if not in the direct path of totality. It also shares information on planetarium showings about the eclipse, frequently asked questions, myths surrounding solar eclipses, how to view and photograph the eclipse safely, and resources for further research available through the library.
Phases of the moon
The document discusses various facts about the phases of the Moon including its average distance from Earth, size relative to Earth, and that its phases are caused by the relative positions of Earth, Moon, and Sun. It also summarizes the different phases and explains common misconceptions such as the Moon affecting weather or human behavior.
Solar and lunar eclipse
There are two types of eclipses - solar and lunar. A solar eclipse occurs when the moon passes between the earth and sun, while a lunar eclipse happens when the earth is between the sun and moon. Eclipses form when the three celestial bodies are aligned in a straight line. An eclipse can be total in the umbra region of complete shadow or partial in the penumbra region of partial shadow.
Eclipses
The document discusses different types of solar and lunar eclipses, including total, partial, and annular solar eclipses and penumbral, partial, and total lunar eclipses. It provides examples of quotes from historical accounts of eclipses dating back to 1375 BC and explanations of why the moon appears red during a lunar eclipse and the different parts of an eclipse shadow.
The Planet Earth
The document discusses key facts about Earth and other objects in our solar system. It notes that Earth rotates on its axis every 23 hours and 56 minutes and revolves around the sun in 365.25 days. It also mentions that the first man landed on the moon on July 20, 1969. When discussing other celestial bodies, it defines asteroids as small bodies that orbit the sun, comets as icy bodies that release gas and dust as they near the sun, and stars as objects made of hydrogen and helium that vary significantly in size.
Eclipses
The document provides an overview of lunar phases, eclipses, and tides. It explains that the moon orbits at an angle relative to Earth's orbit and reflects sunlight, causing phases. Eclipses occur when the sun, earth, and moon align, sometimes blocking sunlight. Total lunar eclipses make the moon appear red due to atmospheric filtering of light. The moon's gravity also causes two high tides each day by pulling the side of Earth closest and farthest to it.
Astronomy lunar phases eclipses and tides
The phases of the moon are caused by the changing positions of the sun, Earth, and moon relative to one another. A new moon occurs when the moon is between the Earth and sun so its night side faces Earth. A full moon happens when the moon is on the opposite side of Earth from the sun, so its full day side faces Earth. Eclipses occur when the sun, Earth, and moon align so that one passes in front of the other, casting a shadow. Lunar eclipses happen during a full moon when Earth blocks the sun's light from reaching the moon. Solar eclipses occur during a new moon when the moon passes between the sun and Earth, casting its shadow on Earth. The moon
Lunar eclipse
An eclipse occurs any time something passes in front of the Sun, blocking its light. This can be the Earth or the Moon.
Our universe maddie!!
The document provides pictures and information about the universe including a meteor shower, the solar system showing most planets, several pictures of the Milky Way galaxy, an explosion on a planet, a picture of a planet's crater with two planets in the background, and a message thanking the viewer for watching and hoping a man like one pictured never reaches the moon.
Solar Eclipse of July 22, 2009
A solar eclipse occurs when the moon passes between the Earth and the sun, blocking the sun's light. There are typically 2-5 solar eclipses per year. There are four types of solar eclipses: total, annular, partial, and hybrid. A total solar eclipse, where the moon completely blocks the sun's light, occurs on average every 18 months and can only be seen from a narrow path on Earth. The longest total solar eclipse of the 21st century occurred on July 22, 2009 and lasted over 6 minutes. Special care must be taken to safely observe a solar eclipse by using eclipse glasses or other filters to view the sun.
Eclipse
This document summarizes a presentation about solar eclipses, including:
1) It discusses the mythology and beliefs around eclipses in ancient cultures like China, India, and Egypt who saw them as omens. It also covers the mechanics of how eclipses occur.
2) It provides safety guidelines for viewing eclipses, emphasizing the importance of using approved solar filters.
3) It uses computer simulations to show the partial solar eclipse of March 29, 2006 as seen from different locations, and lists some important future eclipses between the present and 2030.
Solar and lunar_eclipses1
There are two types of eclipses: solar and lunar. A lunar eclipse occurs when the moon passes into the Earth's shadow, appearing red or dark. A solar eclipse happens when the moon passes between the Earth and sun, casting its shadow on Earth. There are three types of each: total, partial, and penumbral/annular. Lunar eclipses are more common as anyone experiencing nighttime can see it, while only a small area experiences a solar eclipse due to the moon's small umbral shadow. Eclipses occur during eclipse seasons when the sun, Earth, and moon are directly aligned.
Shadows and Solar-Lunar Eclipses
This document discusses shadows, solar eclipses, and lunar eclipses. There are four types of solar eclipses: total, annular, hybrid, and partial. During a total solar eclipse, the moon completely obscures the sun, allowing the solar corona to be seen. An annular solar eclipse occurs when the moon is not large enough to completely cover the sun, leaving a ring of sunlight visible. A hybrid eclipse shifts between total and annular. A partial solar eclipse occurs when the moon only partially obscures the sun. There are also three types of lunar eclipses: total, partial, and penumbral.
The Great American Solar Eclipse
The document provides information about the upcoming August 21, 2017 total solar eclipse, including key times and locations to view it, safety tips for viewing, and what phenomena can be observed. The eclipse will be visible across the United States, with the path of totality stretching from Oregon to South Carolina. Key events along the path include first contact at 1:06 PM, totality beginning at 2:35 PM lasting 2 minutes 13 seconds, and fourth contact at 4:00 PM from Brasstown Bald in Georgia. Proper solar filters are required to safely observe the partial phases, while the corona can only be viewed without filters during the brief period of totality.
Fronts
Fronts are boundaries formed when air masses of differing temperatures and humidity levels collide. There are three main types of fronts: warm fronts, where warmer air slides over cooler air, often producing steady rain; cold fronts, where denser cold air slides under warmer air, bringing precipitation; and occluded fronts, a wedge of warm air between two cold masses that indicates a brief storm.
Work 1
The document discusses the definition of work in physics, explaining that work requires both a force and a movement or displacement of the object. It provides examples of lifting a box, pushing a box, and pushing on a wall to illustrate that work is only done when a force causes an object to move, not simply by applying a force alone. Work is quantified as the product of the force applied and the distance of movement or displacement.
Humidity
Humidity is the amount of water vapor in the air. The higher the temperature, the more water vapor air can hold. Relative humidity compares the actual amount of water vapor in the air to the total amount it can hold at that temperature. When the air reaches 100% relative humidity and can hold no more water vapor, any additional water will condense into a liquid, which occurs at the dew point temperature.
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Advance sunrise and delayed sunset
The sunrise appears earlier and sunset appears later than the actual positions due to atmospheric refraction of sunlight. As sunlight enters the Earth's atmosphere, it follows a curved path through air of varying density, causing the observer to see the sun two minutes before it reaches the horizon at sunrise and two minutes after it dips below the horizon at sunset. This atmospheric refraction increases the overall duration of daylight by four minutes.
Colourful world 1
For whole video YouTube link : https://youtu.be/AZDKXg5_Oz4
Like share盧comment and don't forget to subscribe
Boost your learning with Fundoo Tutor:- You will get
1- Experienced and Qualified Teachers from all over India
2-Advanced Online Interactive Classes (One to One) or ( Group Interactive classes max 5 students in a batch )
3- A mentor will be there 24hrs to clear your doubts or any problem
4- Trusted by many Users all Over India
3-Start learning and Growing With Fundoo Tutor
Visit us here: https://fundootutor.com/
Book Your Demo class from here also: https://lnkd.in/gsJkvH5
An Eclipse to Reminisce - Solar Eclipse 2017
On Aug, 21, 2017, will be the first total solar eclipse visible from coast to coast in the United States after almost a century - 99 years to be exact.
Aug 21, 2017 solar eclipse
The document discusses different types of solar eclipses: partial solar eclipses where only part of the sun is blocked by the moon; annular eclipses where the moon appears smaller allowing light to shine around the edges; and total lunar eclipses where the moon passes into the Earth's shadow. It provides information on the next solar eclipse over the US in 2024 and resources from NASA on visualizing and tracing the 2017 eclipse path. Safety tips are outlined for viewing a solar eclipse, including eye protection, layers of clothing, food, water, and first aid supplies.
4 1 solar system
S6E1. Students will explore current scientific views of the universe and how those views evolved.
a. Relate the Nature of Science to the progression of basic historical scientific models (geocentric, heliocentric) as they describe our solar system, and the Big Bang as it describes the formation of the universe.
b. Describe the position of the solar system in the Milky Way galaxy and the universe.
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
d. Explain the motion of objects in the day/night sky in terms of relative position.
e. Explain that gravity is the force that governs the motion in the solar system.
f. Describe the characteristics of comets, asteroids, and meteors.
Solar eclipse2017
This document provides information about viewing the total solar eclipse that will occur on August 21, 2017 across the United States. It details what viewers in Georgia will be able to see, even if not in the direct path of totality. It also shares information on planetarium showings about the eclipse, frequently asked questions, myths surrounding solar eclipses, how to view and photograph the eclipse safely, and resources for further research available through the library.
Phases of the moon
The document discusses various facts about the phases of the Moon including its average distance from Earth, size relative to Earth, and that its phases are caused by the relative positions of Earth, Moon, and Sun. It also summarizes the different phases and explains common misconceptions such as the Moon affecting weather or human behavior.
Solar and lunar eclipse
There are two types of eclipses - solar and lunar. A solar eclipse occurs when the moon passes between the earth and sun, while a lunar eclipse happens when the earth is between the sun and moon. Eclipses form when the three celestial bodies are aligned in a straight line. An eclipse can be total in the umbra region of complete shadow or partial in the penumbra region of partial shadow.
Eclipses
The document discusses different types of solar and lunar eclipses, including total, partial, and annular solar eclipses and penumbral, partial, and total lunar eclipses. It provides examples of quotes from historical accounts of eclipses dating back to 1375 BC and explanations of why the moon appears red during a lunar eclipse and the different parts of an eclipse shadow.
The Planet Earth
The document discusses key facts about Earth and other objects in our solar system. It notes that Earth rotates on its axis every 23 hours and 56 minutes and revolves around the sun in 365.25 days. It also mentions that the first man landed on the moon on July 20, 1969. When discussing other celestial bodies, it defines asteroids as small bodies that orbit the sun, comets as icy bodies that release gas and dust as they near the sun, and stars as objects made of hydrogen and helium that vary significantly in size.
Eclipses
The document provides an overview of lunar phases, eclipses, and tides. It explains that the moon orbits at an angle relative to Earth's orbit and reflects sunlight, causing phases. Eclipses occur when the sun, earth, and moon align, sometimes blocking sunlight. Total lunar eclipses make the moon appear red due to atmospheric filtering of light. The moon's gravity also causes two high tides each day by pulling the side of Earth closest and farthest to it.
Astronomy lunar phases eclipses and tides
The phases of the moon are caused by the changing positions of the sun, Earth, and moon relative to one another. A new moon occurs when the moon is between the Earth and sun so its night side faces Earth. A full moon happens when the moon is on the opposite side of Earth from the sun, so its full day side faces Earth. Eclipses occur when the sun, Earth, and moon align so that one passes in front of the other, casting a shadow. Lunar eclipses happen during a full moon when Earth blocks the sun's light from reaching the moon. Solar eclipses occur during a new moon when the moon passes between the sun and Earth, casting its shadow on Earth. The moon
Lunar eclipse
An eclipse occurs any time something passes in front of the Sun, blocking its light. This can be the Earth or the Moon.
Our universe maddie!!
The document provides pictures and information about the universe including a meteor shower, the solar system showing most planets, several pictures of the Milky Way galaxy, an explosion on a planet, a picture of a planet's crater with two planets in the background, and a message thanking the viewer for watching and hoping a man like one pictured never reaches the moon.
Solar Eclipse of July 22, 2009
A solar eclipse occurs when the moon passes between the Earth and the sun, blocking the sun's light. There are typically 2-5 solar eclipses per year. There are four types of solar eclipses: total, annular, partial, and hybrid. A total solar eclipse, where the moon completely blocks the sun's light, occurs on average every 18 months and can only be seen from a narrow path on Earth. The longest total solar eclipse of the 21st century occurred on July 22, 2009 and lasted over 6 minutes. Special care must be taken to safely observe a solar eclipse by using eclipse glasses or other filters to view the sun.
Eclipse
This document summarizes a presentation about solar eclipses, including:
1) It discusses the mythology and beliefs around eclipses in ancient cultures like China, India, and Egypt who saw them as omens. It also covers the mechanics of how eclipses occur.
2) It provides safety guidelines for viewing eclipses, emphasizing the importance of using approved solar filters.
3) It uses computer simulations to show the partial solar eclipse of March 29, 2006 as seen from different locations, and lists some important future eclipses between the present and 2030.
Solar and lunar_eclipses1
There are two types of eclipses: solar and lunar. A lunar eclipse occurs when the moon passes into the Earth's shadow, appearing red or dark. A solar eclipse happens when the moon passes between the Earth and sun, casting its shadow on Earth. There are three types of each: total, partial, and penumbral/annular. Lunar eclipses are more common as anyone experiencing nighttime can see it, while only a small area experiences a solar eclipse due to the moon's small umbral shadow. Eclipses occur during eclipse seasons when the sun, Earth, and moon are directly aligned.
Shadows and Solar-Lunar Eclipses
This document discusses shadows, solar eclipses, and lunar eclipses. There are four types of solar eclipses: total, annular, hybrid, and partial. During a total solar eclipse, the moon completely obscures the sun, allowing the solar corona to be seen. An annular solar eclipse occurs when the moon is not large enough to completely cover the sun, leaving a ring of sunlight visible. A hybrid eclipse shifts between total and annular. A partial solar eclipse occurs when the moon only partially obscures the sun. There are also three types of lunar eclipses: total, partial, and penumbral.
The Great American Solar Eclipse
The document provides information about the upcoming August 21, 2017 total solar eclipse, including key times and locations to view it, safety tips for viewing, and what phenomena can be observed. The eclipse will be visible across the United States, with the path of totality stretching from Oregon to South Carolina. Key events along the path include first contact at 1:06 PM, totality beginning at 2:35 PM lasting 2 minutes 13 seconds, and fourth contact at 4:00 PM from Brasstown Bald in Georgia. Proper solar filters are required to safely observe the partial phases, while the corona can only be viewed without filters during the brief period of totality.
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The document discusses the definition of work in physics, explaining that work requires both a force and a movement or displacement of the object. It provides examples of lifting a box, pushing a box, and pushing on a wall to illustrate that work is only done when a force causes an object to move, not simply by applying a force alone. Work is quantified as the product of the force applied and the distance of movement or displacement.
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Humidity is the amount of water vapor in the air. The higher the temperature, the more water vapor air can hold. Relative humidity compares the actual amount of water vapor in the air to the total amount it can hold at that temperature. When the air reaches 100% relative humidity and can hold no more water vapor, any additional water will condense into a liquid, which occurs at the dew point temperature.
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Astronomy is the study of the universe including Earth, planets, stars and space. Telescopes are devices that collect and magnify light to make distant objects appear closer, larger and brighter. There are two main types of telescopes - refracting telescopes and reflecting telescopes - which use lenses or mirrors respectively to focus visible light, as well as telescopes that observe other parts of the electromagnetic spectrum invisible to the human eye.
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This document discusses how weather is measured. It describes the four seasons and some typical weather patterns for each, including temperature and precipitation. It then focuses on specific tools used to measure aspects of weather like temperature (thermometer), precipitation (rain gauge, ruler), and wind (anemometer). The document provides examples of how rain gauges and rulers are used to collect weather data by measuring rainfall amounts and snow depth in different locations over time.
Thunder storm
Thunderstorms form when warm, humid air rises rapidly due to heating from the sun's surface or being pushed upward by cold fronts or wind. As the warm air rises and cools, the water vapor condenses to form droplets in clouds. The droplets grow heavy and fall as rain, pulling cool air with it. Negative electric charges build up in the cloud bottom and discharge as lightning through extremely hot air, producing the sound waves we hear as thunder.
Angle of insolation
Weather is defined as the condition of the atmosphere at a particular time and place. Key factors that influence weather changes include temperature, wind, moisture, and precipitation. Insolation refers to the amount of sun energy reaching the Earth, and its angle is a measure of how high the sun is in the sky. As the angle of insolation increases, the intensity of sunlight increases due to being concentrated in a smaller area, while a decreasing angle spreads heat over a larger area. The angle and intensity of insolation varies across the Earth and is greatest near the equator and lowest at the poles, with the noon sun providing the maximum angle.
Types of precipitation copy
There are four main types of precipitation: rain, which falls when warm; sleet, which forms when raindrops freeze into ice pellets before falling; snow, which forms when water vapor condenses into ice crystals due to cold air; and hail, which forms when raindrops are pushed high into the atmosphere and freeze. Rainfall has been measured for thousands of years using a rain gauge, which is important for farmers to know rainfall amounts for the year.
What factors affect different types of weather (the whole lesson)
The document describes the water cycle, which is the continuous movement of water on, above, and below the surface of the Earth. It explains that the sun heats water in the oceans causing evaporation into water vapor which forms clouds. As air rises, it cools and condenses into rain, snow, or other precipitation which falls back to Earth's surface and collects in lakes, rivers, and oceans - completing the cycle. The document also covers related topics like humidity, cloud types, precipitation types, thunderstorms, tornadoes, and hurricanes.
Refracting and reflecting telescope
Refracting telescopes use lenses to gather and focus light, while reflecting telescopes use mirrors. Most large telescopes, like those found in observatories, are reflecting telescopes because it is easier to build large mirrors that gather more light. Invisible light telescopes can detect wavelengths beyond the visible spectrum, allowing astronomers to study objects that cannot be observed with visible light alone, such as using infrared telescopes to gather heat signatures.
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sWhat factors affect different types of weather (the whole lesson)
sWhat factors affect different types of weather (the whole lesson)
What factors affect different types of weather (the whole lesson)
What factors affect different types of weather (the whole lesson)
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12 seven characteristics of living organism.
Living things have seven distinguishing life processes: nutrition, respiration, movement, growth, excretion, reproduction, and irritability. Animals and plants exhibit these processes in different ways. Animals must obtain food from other living things, while plants can make their own food through photosynthesis. Muscles enable animal movement and respiration releases energy from food in both animals and plants. Waste products are excreted to remove toxins from the body.
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This document outlines 7 classroom rules: students must obtain permission before talking or leaving their seat; homework is due on assigned dates; students should come prepared with materials; name and date should be written on work; questions should be read carefully before answering; and interrupting is not allowed.
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Gravity and inertia work together to keep planets in orbit around the Sun. Gravity provides an attractive force between all massive objects like the Sun and planets. Inertia is the tendency of a moving object to stay in motion, which causes planets to travel in curved paths rather than flying off in straight lines. The balance between gravity pulling planets toward the Sun and inertia allowing them to travel in circles results in stable orbits that have allowed planets to revolve around the Sun for billions of years.
Astronomy lesson 1
The document discusses different types of telescopes used in astronomy. It describes refracting telescopes which use lenses and reflecting telescopes which use mirrors. Most large telescopes found in observatories are reflecting telescopes because it is easier to build large mirrors that can collect more light. The document also discusses other types of telescopes like infrared telescopes that can observe invisible light beyond the visible spectrum.
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The document summarizes key features of the lunar landscape as observed from Earth. It describes light and dark colored areas on the moon's surface, including craters formed by impacts, large flat dark areas called maria formed by ancient lava flows, mountains around the edges of maria, and older highlands near the lunar poles with more craters. It also discusses lunar phases caused by the changing orientation of the moon as it orbits Earth, solar and lunar eclipses, and tides caused by the gravitational pull of the moon and sun.
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This document outlines some of the rules students should follow at school. It explains that rules help keep students safe and happy, and that teachers set the classroom rules to follow, such as playing nicely on the playground, following the line leader, and walking quietly in the hallways.
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Each student group chose a planet to explore for a project presented as a PowerPoint with videos and animations. The presentation must include the length of the planet's day and year, its order by distance from the sun and size, number of moons, structure and features, and recent discoveries.
Asteroids ,comets and meteors
Between Mars and Jupiter lies the asteroid belt, home to rocky asteroids that orbit the sun. Comets are balls of ice and rocks that develop long tails as they near the sun due to warming and gas release. Meteoroids are small objects that orbit the sun and occasionally collide with celestial bodies like the moon, and meteors are meteoroids that burn up in a planet's atmosphere in a bright streak. Those that reach a planet's surface are called meteorites.
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This trimester, students have been learning about outer space, stars, moons and planets. They will be divided into groups to explore different planets in the solar system, with each group assigned certain planets to research and report on, as will be announced on the class wiki tomorrow along with due dates for each task.
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Gravity and inertia work together to keep planets in orbit around the Sun. Gravity provides an attractive force based on the masses of the planet and Sun that curves the planet's path. Inertia causes objects to travel in a straight line, but gravity pulls planets into an elliptical orbit rather than flying off into space in a straight line. Ancient models incorrectly thought Earth was the center, but it is now known that planets revolve around the Sun.
Tides
The regular rise and fall of water levels along a shore is caused by tides. Tides are primarily caused by the gravitational pull of the moon on Earth's oceans, which causes the water to bulge on the side facing the moon. Sometimes when the sun, moon, and Earth are aligned, the combined gravitational pull results in especially strong spring tides with higher high tides and lower low tides, while neap tides with weaker gravitational pull result in smaller differences between high and low tides.
Phases of the moon
The phases of the moon are caused by the changing position of the Earth, Moon, and Sun, with half the Moon's surface always reflecting sunlight. As seen from Earth, the amount of the Moon's lit surface changes over a cycle from new moon to full moon and back again, known as waxing and waning, with the main phases being new, crescent, quarter, and full moons.
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The document summarizes key features of the lunar landscape. It describes craters as bowl-shaped depressions formed by impacts from space objects. Maria are large, flat, dark areas on the moon formed when huge impacts caused lava flows that cooled into smooth, dark surfaces. Mountains formed around the edges of maria from the same impacts. Highlands near the lunar poles have more craters, indicating they are older landscapes. Some deep valleys may contain small amounts of ice.
Shadows
The document discusses the International Date Line and how traveling west across it would change the date. It also talks about how space probes send images and data back to Earth for scientists to study, and how artificial satellites are sometimes launched into space by astronauts on the space shuttle before the astronauts return to Earth on the shuttle.
Standard time zone
Standard time zones were established in 1884 with 24 zones around the world representing one hour each. Places within the same time zone use the same time, and time changes by one hour when traveling east or west between zones. If it is 8:00 pm in Denver, Colorado (Mountain Time), the time in Atlanta, Georgia (Eastern Time) would be 9:00 pm since Atlanta is one time zone east of Denver. Traveling west across the International Date Line would result in the date changing.
Rotation and day and night
The Earth has two types of movements: rotation around its axis, which takes 24 hours and results in the cycle of day and night as different parts of the Earth face the sun, and rotation around the sun in its orbit. The Earth's axis is an imaginary line passing through the north and south poles. When a part of the Earth faces the sun it is daytime, and when a part faces away it is night.
How do scientists predict weather (the whole lesson )
Isobars are lines connecting areas with equal air pressure on weather maps. They indicate wind patterns, with closer lines showing higher winds. Low pressure systems have decreasing pressure towards their center and are associated with clouds and rain. High pressure systems have higher pressure at their center and fair weather. Isobars provide information about current and expected weather conditions.
What makes up weather ( whole presentation )
The document summarizes the layers of the atmosphere and factors that influence weather. It discusses the five main layers - troposphere, stratosphere, mesosphere, thermosphere, and exosphere - and characteristics of each. Weather variables like temperature, wind, moisture, and precipitation are identified. The angle and intensity of solar insolation is explained, noting it is greatest at the equator and lowest at the poles. Air pressure variations result from uneven heating and cooling, with low pressure where air is warm and high pressure where air is cool. Differences in pressure cause surface winds and convection cells in the atmosphere.
Fossil fuel
Soil forms slowly over hundreds or thousands of years from weathered rock and decayed animal and plant remains. Fossil fuels like coal and natural gas are non-renewable resources that are formed over millions of years as the remains of ancient organisms are buried and exposed to heat and pressure underground, transforming first into peat or soft coal and eventually into hard coal, oil or natural gas. The main difference between coal and natural gas is that coal forms from buried plant remains in ancient swamps, while natural gas forms from the remains of once-living organisms buried in the oceans.
Hurricanes
A hurricane is a very destructive and dangerous storm that forms in stages, starting as a tropical depression then tropical storm before becoming a hurricane with wind speeds over 119km/hr. It is filled with rain, strong winds, lightning, thunder, hail and tornadoes. In the center of the hurricane is an eye, which is ironically a calm area within this otherwise very powerful storm.
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Anti-Universe And Emergent Gravity and the Dark Universe
Recent theoretical progress indicates that spacetime and gravity emerge together from the entanglement structure of an underlying microscopic theory. These ideas are best understood in Anti-de Sitter space, where they rely on the area law for entanglement entropy. The extension to de Sitter space requires taking into account the entropy and temperature associated with the cosmological horizon. Using insights from string theory, black hole physics and quantum information theory we argue that the positive dark energy leads to a thermal volume law contribution to the entropy that overtakes the area law precisely at the cosmological horizon. Due to the competition between area and volume law entanglement the microscopic de Sitter states do not thermalise at sub-Hubble scales: they exhibit memory effects in the form of an entropy displacement caused by matter. The emergent laws of gravity contain an additional ‘dark’ gravitational force describing the ‘elastic’ response due to the entropy displacement. We derive an estimate of the strength of this extra force in terms of the baryonic mass, Newton’s constant and the Hubble acceleration scale a0 = cH0, and provide evidence for the fact that this additional ‘dark gravity force’ explains the observed phenomena in galaxies and clusters currently attributed to dark matter.
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Evidence of Jet Activity from the Secondary Black Hole in the OJ 287 Binary S...
Wereport the study of a huge optical intraday flare on 2021 November 12 at 2 a.m. UT in the blazar OJ287. In the binary black hole model, it is associated with an impact of the secondary black hole on the accretion disk of the primary. Our multifrequency observing campaign was set up to search for such a signature of the impact based on a prediction made 8 yr earlier. The first I-band results of the flare have already been reported by Kishore et al. (2024). Here we combine these data with our monitoring in the R-band. There is a big change in the R–I spectral index by 1.0 ±0.1 between the normal background and the flare, suggesting a new component of radiation. The polarization variation during the rise of the flare suggests the same. The limits on the source size place it most reasonably in the jet of the secondary BH. We then ask why we have not seen this phenomenon before. We show that OJ287 was never before observed with sufficient sensitivity on the night when the flare should have happened according to the binary model. We also study the probability that this flare is just an oversized example of intraday variability using the Krakow data set of intense monitoring between 2015 and 2023. We find that the occurrence of a flare of this size and rapidity is unlikely. In machine-readable Tables 1 and 2, we give the full orbit-linked historical light curve of OJ287 as well as the dense monitoring sample of Krakow.
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Hello Everyone Here We are Sharing You with The process of protien Synthesis in very short points you will be Able to understand It Very well
Candidate young stellar objects in the S-cluster: Kinematic analysis of a sub...
Context. The observation of several L-band emission sources in the S cluster has led to a rich discussion of their nature. However, a definitive answer to the classification of the dusty objects requires an explanation for the detection of compact Doppler-shifted Brγ emission. The ionized hydrogen in combination with the observation of mid-infrared L-band continuum emission suggests that most of these sources are embedded in a dusty envelope. These embedded sources are part of the S-cluster, and their relationship to the S-stars is still under debate. To date, the question of the origin of these two populations has been vague, although all explanations favor migration processes for the individual cluster members. Aims. This work revisits the S-cluster and its dusty members orbiting the supermassive black hole SgrA* on bound Keplerian orbits from a kinematic perspective. The aim is to explore the Keplerian parameters for patterns that might imply a nonrandom distribution of the sample. Additionally, various analytical aspects are considered to address the nature of the dusty sources. Methods. Based on the photometric analysis, we estimated the individual H−K and K−L colors for the source sample and compared the results to known cluster members. The classification revealed a noticeable contrast between the S-stars and the dusty sources. To fit the flux-density distribution, we utilized the radiative transfer code HYPERION and implemented a young stellar object Class I model. We obtained the position angle from the Keplerian fit results; additionally, we analyzed the distribution of the inclinations and the longitudes of the ascending node. Results. The colors of the dusty sources suggest a stellar nature consistent with the spectral energy distribution in the near and midinfrared domains. Furthermore, the evaporation timescales of dusty and gaseous clumps in the vicinity of SgrA* are much shorter ( 2yr) than the epochs covered by the observations (≈15yr). In addition to the strong evidence for the stellar classification of the D-sources, we also find a clear disk-like pattern following the arrangements of S-stars proposed in the literature. Furthermore, we find a global intrinsic inclination for all dusty sources of 60 ± 20◦, implying a common formation process. Conclusions. The pattern of the dusty sources manifested in the distribution of the position angles, inclinations, and longitudes of the ascending node strongly suggests two different scenarios: the main-sequence stars and the dusty stellar S-cluster sources share a common formation history or migrated with a similar formation channel in the vicinity of SgrA*. Alternatively, the gravitational influence of SgrA* in combination with a massive perturber, such as a putative intermediate mass black hole in the IRS 13 cluster, forces the dusty objects and S-stars to follow a particular orbital arrangement. Key words. stars: black holes– stars: formation– Galaxy: center– galaxies: star formation
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Alternate Wetting and Drying - Climate Smart Agriculture
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Revolution
- 1. What is the difference between planetary images taken from Earth and those taken from space? •Images taken from Earth would have less sharpness and detail than those taken from a satellite or a probe because Earth’s atmosphere would interfere with the quality of photos
- 2. 2)The Earth’s Revolution around the Sun
- 3. • The rotation of Earth around the sun results in Four Seasons