Atmosphere

Front

What percentage of the earth's atmosphere is nitrogen?

Back

78%

Front

What does the ozone layer do?

Back

Absorbs dangerous solar radiation.

Front

In which layer of the Earth's atmosphere does all life exist?

Back

Troposphere.

Front

What gas makes up most of the air we breathe?

Back

Nitrogen.

Front

What is the weight of the atmosphere commonly referred to as?

Back

Air pressure.

Front

What are the five layers of the Earth's atmosphere?

Back

Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere.

Front

What is the primary gas in the Earth's atmosphere?

Back

Nitrogen.

Front

What is the role of the stratosphere?

Back

Contains the ozone layer, which protects us from UV radiation.

Front

What happens to air pressure as altitude increases?

Back

Air pressure decreases.

Front

What is the greenhouse effect?

Back

The trapping of the sun's warmth in the planet's lower atmosphere.