SC 4 Earth's Atmosphere

Earth’s atmosphere is the layer of gases that surrounds the planet and makes conditions on Earth suitable for living things. 

​What is the atmosphere?

Nitrogen makes up more than 3/4 of what we consider to be “air’ and oxygen makes up most of the rest, but a small amount of carbon dioxide, water vapor, and other gases are also found in the atmosphere. 

​Gases of the atmosphere?

There are 5 layers in the atmosphere. The layer closest to the earth (troposphere) is where weather takes place. Water vapor (water in the form of a gas) is located in this layer.

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​Layers of the atmosphere.