Atmosphere Unit

Match it! Select the correct answer from the pull down...Good luck!

What are the most abundant gases in our atmosphere?

How many layers of the atmosphere are there?

What layer of the atmosphere includes the Ionosphere?

When you go higher in elevation, does air pressure increase or decrease?

A mixture of gases surrounding a planet or moon.

The force of air pressing on objects.

The height above sea level.

How tightly packed molecules are in a given space.