Air Composition, Density, Pressure

This is the weight or force of the atmosphere pressing down on Earth's surface

• Air Pressure

• Density

A device that is used to measure atmospheric pressure is a ___________.

• barometer

• thermometer

• kilometer

• micrometer

Air pressure is greater _______.

• at the top of the mountain

• at the bottom of the mountain

• at the center of the mountain

What happens to air pressure as you move upward into the atmosphere?

• air pressure increases

• air pressure decreases

• air pressure stays the same

This is how compact molecules are in a solid liquid or gas

• Air Pressure

• Density

Density of air is greater ________.

• at the top of the mountain
• at the bottom of the mountain
• at the center of the mountain

What is altitude?

• how much something weighs

• the distance above sea level - the distance above Earth's Surface

• how big something is

What happens to the amount of oxygen molecules as altitude increases?

• fewer molecules

• more molecules

• same amount of molecules

• nothing happens to the molecules

The movement of air caused by a difference in air pressure is called..

• Rain

• Wind

• Air

Cold air is more_____ than warm air

• Dense

• Stale

• Colorful