What is the water cycle?
What causes currents in the air and oceans?
What causes air pressure?
Why do we get short of breath at the top of a mountain?
Why is the cold trap important to earth?
What is the greenhouse effect?
How is snow related to the albedo of a planet?

Facts - get the details right

Most of the earth's atmosphere is within ______ miles of the earth's surface.
The pressure of one atmosphere is ____________ pounds per square inch.
Name three gases that are present in our atmosphere.
_________ air can hold more water than __________ air.
When air is cooled, does it take up or lose water?
________ air rises.

Picture It!

Draw a diagram that shows how the water cycle works.