The Atmosphere

Front

What is the main gas in 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 is the definition of the atmosphere?

Back

A mixture of gases that surrounds the Earth like a blanket.

Front

What is the outermost layer of the atmosphere?

Back

Exosphere, which is sometimes considered to be outer space.

Front

How does air pressure change with altitude?

Back

Air pressure decreases as altitude increases.

Front

What layer of the atmosphere contains the ozone layer?

Back

Stratosphere, which protects us from harmful UV radiation.

Front

What is the role of the troposphere?

Back

It is where all weather events occur and where most of the atmosphere's mass is found.

Front

What gas is essential for human respiration?

Back

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

Front

What is the temperature trend in the thermosphere?

Back

Temperature increases with altitude due to absorption of high-energy radiation.

Front

What is the significance of the mesosphere?

Back

It is the layer where most meteors burn up upon entering the atmosphere.