Chapter 11 Lessons 1-3 Flashcard

Front

What are gases in air that are present in very small amounts called?

Back

Trace gases.

Front

What process occurs when water vapor condenses out of the air to form clouds?

Back

Condensation.

Front

What happens to air pressure as altitude increases in the troposphere?

Back

Air pressure decreases.

Front

In the mesosphere and stratosphere, what happens to temperatures as altitudes increase?

Back

Temperatures decrease.

Front

What do dust, smoke, salt, and chemicals have in common?

Back

They are particles in air.

Front

What is the layer of the atmosphere where weather occurs?

Back

Troposphere.

Front

What is the term for the amount of water vapor in the air?

Back

Humidity.

Front

What is the process called when water changes from a liquid to a gas?

Back

Evaporation.

Front

What is the term for the boundary between the troposphere and the stratosphere?

Back

Tropopause.

Front

What is the main gas found in the Earth's atmosphere?

Back

Nitrogen.