The Atmosphere

The layer of gases surrounding Earth is called the _________.

The force exerted by the weight of air is called _________.

The layer of the atmosphere above the troposphere is the _________.

The lowest layer of Earth's atmosphere, where weather occurs, is the _________.

Why can we see clouds but not water vapor in the atmosphere?

What are the parts of the atmosphere?

What causes air pressure?

What happens to air pressure as altitude increases?

How do air masses affect weather?

Which two systems interact to support life through air?