The Earth’s Atmosphere

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Presentation transcript:

The Earth’s Atmosphere Chapter 1

The Importance of Atmosphere The atmosphere helps regulate earth’s temperature It also protects the earth from harmful UV radiation

Composition Nitrogen (78%) and oxygen (21%) are the main gases in the atmosphere. The other 1% are… Argon Carbon Dioxide Others…

Atmosphere Layers The layers of the atmosphere are defined by temperature Troposphere Stratosphere Mesosphere Thermosphere Exosphere

Troposphere It is where we are Contains 75% of the atmosphere’s gases (nearly) All weather occurs here

Stratosphere Contains the highest amount of ozone molecules (O3)

Mesosphere Have you seen a ‘shooting star’? Not really a star, just something breaking up in the mesosphere

Thermosphere The temperature is very, very high

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