Atmosphere Exam Review

Front

Why are there fewer molecules of air up in the mountains?

Back

Because air pressure decreases as you go higher.

Front

What percentage of the earth's atmosphere is oxygen?

Back

21%.

Front

The weight of the atmosphere is...

Back

air pressure.

Front

If the ozone layer were to be completely destroyed, life on Earth would...

Back

die from too much solar radiation.

Front

As we go higher in the atmosphere, the air pressure...

Back

decreases.

Front

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

Back

Nitrogen (78%).

Front

What is the role of the ozone layer?

Back

To protect life on Earth from harmful solar radiation.

Front

What happens to temperature as you ascend in the troposphere?

Back

It generally decreases.

Front

What is the composition of the Earth's atmosphere?

Back

78% nitrogen, 21% oxygen, and 1% other gases.

Front

What is air pressure?

Back

The force exerted by the weight of air above a given point.