Weather: Air Pressure and Density

Front

What is air pressure?

Back

The weight of a column of air pushing down on an area.

Front

What happens to air pressure as altitude increases?

Back

Air pressure decreases as altitude increases.

Front

What is density?

Back

The amount of mass in a given volume.

Front

How does temperature affect air pressure?

Back

Warmer air is less dense and exerts less pressure than cooler air.

Tags

NGSS.MS-ESS2-6

Front

What is the relationship between air density and altitude?

Back

Air density decreases as altitude increases.

Front

Why is it harder to breathe at high altitudes?

Back

There is a low density of air molecules.

Front

What does it mean when we say air is 'compressed'?

Back

Air molecules are closer together, increasing air pressure.

Front

What is the effect of humidity on air density?

Back

Humid air is less dense than dry air because water vapor is lighter than nitrogen and oxygen.

Front

What is the formula for calculating density?

Back

Density = Mass / Volume.

Front

What happens to air pressure when a storm approaches?

Back

Air pressure typically decreases as a storm approaches.

Tags

NGSS.MS-ESS2-5