Differential Heating, Convection, and Air

Pressure

Science Review Game

How does temperature affect

the amount of water vapor in the

air?

Explain how convection currents are

produced in the air.

Describe what happens to air

molecules when air is heated.

What is the source of energy that

causes the wind to blow?

What is atmospheric

pressure and what causes it?

Is atmospheric pressure higher on a mountain top or at sea level. Why?

A student opened a bottle of water in the mountains, drank the water, and put

on the cap. When he returned to Redwood City, the bottle was crushed.

Explain why.

In which direction does atmospheric

pressure push?

What happens to the molecules in a

sealed syringe when the plunger

is pushed in?

Below is a picture of a closed container with a piston.

Complete the drawing of the second container to show what happens to the molecules of air when the piston pushes down.

• Where is the atmosphere densest? Why?

mountain

sea level

The graph shows temperature data from two containers. One container had 100 ml of water and the other had 100 ml of dry soil. Each container was placed in the sunshine for 20 minutes and then in the shade for 20 minutes.

Which container, A or B, had the dry soil?

Explain.

The graph shows temperature data from two containers. One container had 100 ml of water and the other had 100 ml of dry soil. Each container was placed in the sunshine for 20 minutes and then in the shade for 20 minutes. Which of

these materials, dry soil or water, is a heat sink?

Explain.

Which way will the wind blow?

Uneven heating of Earth by the Sun causes ...

a. humidity.

b. clouds.

c. wind.

d. precipitation.

Bonus Round

• Decide how many points you would like to wager.

Kalli has a vial of cold water with blue coloring at the bottom. She puts a

small bag of warm water next to the vial as shown.

What will happen in the vial? What is

the name of the current?

warmwater