Atmosphere

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What is the atmosphere?

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The atmosphere is a layer of gases surrounding a planet, held in place by gravity. It is essential for life on Earth, providing oxygen, protecting from solar radiation, and regulating temperature.

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What are the main layers of the Earth's atmosphere?

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The main layers of the Earth's atmosphere are: 1. Troposphere 2. Stratosphere 3. Mesosphere 4. Thermosphere 5. Exosphere.

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What is the troposphere?

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The troposphere is the lowest layer of the atmosphere, where weather occurs and where most of the Earth's air mass is located. It extends from the Earth's surface up to about 8-15 kilometers.

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What is the stratosphere?

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The stratosphere is the second layer of the atmosphere, located above the troposphere, extending from about 15 to 50 kilometers above the Earth's surface. It contains the ozone layer, which absorbs and scatters ultraviolet solar 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, extending from about 50 to 85 kilometers. 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, extending from about 85 to 600 kilometers. It is characterized by a significant increase in temperature with altitude and contains the ionosphere.

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What is the exosphere?

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The exosphere is the outermost layer of the atmosphere, extending from about 600 kilometers to 10,000 kilometers. It is where atmospheric particles are so sparse that they can escape into space.

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What are prevailing winds?

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Prevailing winds are winds that blow predominantly from a single general direction over a particular point on the Earth's surface. They are influenced by the Earth's rotation and atmospheric pressure.

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What are trade winds?

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Trade winds are steady winds that flow from east to west in the tropics, between the equator and 30 degrees latitude. They are important for navigation and weather patterns.

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What are westerlies?

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Westerlies are prevailing winds that blow from west to east in the mid-latitudes, between 30 and 60 degrees latitude. They play a significant role in weather systems.