Atmosphere Review

Front

What is the main gas that makes up the Earth's atmosphere?

Back

Nitrogen, which makes up about 78% of the atmosphere.

Front

What layer of the atmosphere do we live in?

Back

Troposphere, where weather occurs and where we breathe.

Front

What happens to the density of the atmosphere as you move farther from the Earth?

Back

The atmosphere becomes less dense.

Front

What is evaporation and how does it affect the Earth?

Back

Evaporation is the process of water turning into vapor, which cools the Earth.

Front

What is the second most abundant gas in the atmosphere?

Back

Oxygen, which makes up about 21% of the atmosphere.

Front

What is the role of the stratosphere?

Back

The stratosphere contains the ozone layer, which protects us from harmful UV radiation.

Front

What is the mesosphere?

Back

The mesosphere is the layer above the stratosphere where temperatures decrease with altitude.

Front

What is the exosphere?

Back

The exosphere is the outermost layer of the atmosphere, where the atmosphere transitions into space.

Front

What is atmospheric pressure?

Back

Atmospheric pressure is the weight of the air above us, which decreases with altitude.

Front

What is the greenhouse effect?

Back

The greenhouse effect is the trapping of heat in the atmosphere by greenhouse gases, which warms the Earth.