Earths Atmosphere

Front

What is the atmosphere?

Back

The layer of air surrounding the Earth.

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What is the Troposphere?

Back

The lowest layer of the atmosphere where all weather occurs.

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What is the Stratosphere?

Back

The second layer of the atmosphere above the troposphere where temperature changes very little.

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What is the Mesosphere?

Back

The layer of the atmosphere extending from the top of the stratosphere to an altitude of about 50 miles (80 kilometers).

Front

What is the Thermosphere?

Back

The layer of the atmosphere above the mesosphere, where temperature increases significantly with altitude.

Front

What is the Exosphere?

Back

The outermost layer of the atmosphere, beginning at about 50 miles (80 kilometers) above the Earth's surface and extending into outer space.

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Where do meteors burn up?

Back

In the Mesosphere.

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What is the main function of the atmosphere?

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To protect life on Earth by filtering harmful solar radiation and maintaining temperature.

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What gases primarily make up the atmosphere?

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Nitrogen (78%) and Oxygen (21%).

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What is the Ozone Layer?

Back

A region of the Stratosphere that contains a high concentration of ozone (O3) and protects the Earth from harmful UV radiation.