| A | B |
|---|
| humidity | the amount of water vapor in the air |
| saturated air | air that contains all the water vapor it can possibly hold |
| condensation | when matter changes from a gas to a liquid |
| evaporation | when matter changes from a liquid to a gas |
| air mass | a large amount of air with the same temperature and humidity |
| front | the line where two air masses meet |
| air pressure | the amount that air presses or pushes on anything |
| wind | air that is moving from an area of high pressure to an area of low pressure |
| water vapor | water in the form of gas |
| ice crystals | along with tiny droplets of water, these make up clouds (even in the summer) |
| warm front | the area where a warm air mass runs into a cold air mass and slides up over the cold air |
| cold front | the area where a cold air mass moves toward a warm air mass and pushes the warm air up quickly |
