Atmosphere

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What is the atmosphere?

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The atmosphere is the layer of gases that surrounds the Earth. It is essential for life as it provides air to breathe and protects us from harmful solar radiation.

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What are the main layers of the atmosphere?

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The main layers of the atmosphere are the Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere.

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What is the Troposphere?

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The Troposphere is the lowest layer of the atmosphere where we live. It contains most of the Earth's weather.

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What is the Stratosphere?

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The Stratosphere is the second layer of the atmosphere, above the Troposphere. It contains the ozone layer, which protects us from the sun's harmful rays.

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What is the Ozone Layer?

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The Ozone Layer is a part of the Stratosphere that contains a high concentration of ozone (O3) gas, which absorbs most of the sun's harmful ultraviolet radiation.

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What is the Mesosphere?

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The Mesosphere is the third layer of the atmosphere, located above the Stratosphere. It is where most meteors burn up upon entering the Earth's atmosphere.

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What is the Thermosphere?

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The Thermosphere is the fourth layer of the atmosphere, above the Mesosphere. It is very hot and is where the auroras occur.

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What is the Exosphere?

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The Exosphere is the outermost layer of the atmosphere, where the air is very thin and satellites orbit the Earth.

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How long does it take for the Earth to orbit the Sun?

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It takes 365 days for the Earth to make a full orbit around the Sun.

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What causes seasons on Earth?

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Seasons are caused by the tilt of the Earth's axis as it orbits the Sun. This tilt affects how much sunlight different parts of the Earth receive.