| A | B |
|---|
| earth's surface covered in water | 3/4 |
| difference b/t ocean and fresh water | ocean is salty |
| mountain air has | lower air pressure |
| Baltic sea is less salty because | more rivers flow into it |
| When moist air rises, | it changes into a cloud |
| Condensation is | water vapor becoming liquid water |
| Air is | gases that surround Earth |
| measures air pressure | barometer |
| humidity | amount of water in the air |
| stratus clouds | close to ground and bring rain or snow |
| greenhouse gases are good | because they keep Earth warm |
| clouds along a cold front | water vapor cools and makes a cloud |
| anemometer | measures wind speed |
| wind vane | shows direction wind is blowing |
| meterologists | scientists that study weather |
| rain gauge | small tube that measures rain fall |
| hygrometer | measures humidity |
| alto clouds | very high |
| nimbo | rain-bearing |
| cumulus | thick, white, and puffy cloud |
| stratus | flat layers of clouds close to Earth |
| cirrus clouds | vapor turns to ice crystals "mare's tails" |
| front | where two air masses meet |
| humidity | amount of water vapor in air |
| low pressure | air particles are father apart |
| high pressure | cool air sinks and particles are closer together |
| condensation | water vapor becoming liquid water as it cools |
| precipitation | any form of water falling to Earth |
