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Atmosphere

Explore the four layers of the atmosphere - troposphere, stratosphere, mesosphere, and thermosphere. Discover the composition of air and the role of different gases. Visit www.worldofteaching.com for free powerpoints.

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Atmosphere

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  1. Atmosphere The surrounding air of the Earth Visit www.worldofteaching.com For 100’s of free powerpoints

  2. Layers of the atmosphere • There are 4 layers in the atmosphere • They are the troposphere, mesosphere, thermosphere, and stratosphere

  3. Troposphere • This is the layer that is closest to the surface of the earth • It’s elevation ranges from 0 to 10 km

  4. Stratosphere • This layer sits on top of the troposphere • It’s elevation ranges from 10 km to around 25 km • This layer contains the ozone layer, which protects us from harmful sunlight

  5. Mesosphere • This layer is above the stratosphere • It’s elevation ranges from 25 to 100 km

  6. Thermosphere • This is the highest layer of the atmosphere • It’s height ranges from 100 to 400 km • This is where most small meteorites burn up and is also the location in the atmosphere that the northern lights occur (aurora borealis)

  7. Composition of Air • There are many different types of gasses in the atmosphere • They include nitrogen, oxygen, argon, carbon dioxide and other noble gasses • The gas that is most abundant is nitrogen

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