| A | B |
|---|
| Air that surrounds the planet | atmosphere |
| puffy, white clouds at middle altitudes | cumulus |
| air particles pressing down on a surface | air pressure |
| laer of the atmosphere that is closest to Earth | Troposphere |
| Layer of the atmosphere just above most weather. | Stratosphere |
| Describes how heat from the sun is trapped in the atmosphere to warm Earth | Green House Effect |
| Large body of air that has moisture content and temperature similar to the water or land over which it formed. | air mass |
| Border formed where a cold air mass and a warm air mass meet | Front |
| Instrument that measures air pressure | barometer |
| Instrument that measure humidity | hygrometer |
| Amount of water vapor in the air | humidity |
| Thin, wispy clouds at high altitudes | cirrus |
| Dark, towering clouds that bring heavy rain | cumulonimbus |
| Thick, gray clouds near Earth's surface | strattus |
| Four layers of the atmosphere | troposphere, stratosphere, mesosphere, thermosphere |
| Two properties of air masses | temperature and moisture content |
| Direction weather travels | East to West |
