Air Pressure, Density and temperature

Front

What happens to density when there are fewer molecules that are further apart?

Back

Density is low.

Front

What is the main component of Earth's atmosphere, making up 78% of it?

Back

Nitrogen.

Front

What happens to density when there are more molecules that are close together?

Back

Density is high.

Front

How does cold air compare to warm air in terms of pressure?

Back

Cold air exerts more pressure than warm air.

Front

How does the density of warm air compare to cold air?

Back

Warm air is less dense than cold air.

Front

What is air pressure?

Back

Air pressure is the force exerted by the weight of air molecules above a surface.

Front

How does temperature affect air pressure?

Back

As temperature increases, air pressure decreases because warm air expands.

Front

What is the relationship between altitude and air pressure?

Back

As altitude increases, air pressure decreases.

Front

What is convection?

Back

Convection is the movement of air caused by differences in temperature and density.

Front

What is the role of nitrogen in the atmosphere?

Back

Nitrogen is essential for life and makes up the majority of the atmosphere.