ES 3.2 Atmosphere

Front

What are the two most abundant gases in Earth's atmosphere?

Back

Nitrogen and Oxygen.

Front

Which gas is the most abundant in our atmosphere?

Back

Nitrogen.

Front

How many oxygen atoms are in a molecule of ozone?

Back

Three.

Front

Where is the air pressure the greatest in the atmosphere?

Back

At sea level.

Front

What does the ozone layer absorb?

Back

Ultraviolet radiation.

Front

What is the primary function of the atmosphere?

Back

To protect life on Earth by filtering harmful solar radiation and maintaining temperature.

Front

What is the composition of dry air?

Back

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

Front

What is the role of carbon dioxide in the atmosphere?

Back

It helps regulate Earth's temperature through the greenhouse effect.

Front

What is air pressure?

Back

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

Front

What is the significance of the stratosphere?

Back

It contains the ozone layer, which protects Earth from harmful UV radiation.