| A | B |
|---|
| cirrus clouds | wispy streaks high in the sky |
| evaporate | to change from a liquid to a gas |
| troposphere | layer with most tightly packed air particles |
| fog | stratus clouds formed near the ground |
| condense | to change from a gas to a liquid |
| ionosphere | layer with electrically charged particles |
| trade winds | strong, reliable wind belts |
| stratosphere | clear, dry atmosphere layer |
| cumulus clouds | white, puffy fair-weather clouds |
| stratus clouds | clouds that often bring rain |
| water vapor | water in the form of a gas |
| clouds often form over mountains because | air is forced upward and cools |
| The ozone layer is in the lower half of the ______ | stratosphere |
| The cause of winds is_________ | moving air in the atmoshere |
| wind belt | the pattern of wind movement around the earth |
| wind cell | continuous cycle of rising warm air and falling cold air |
| prevailing westerly | usually blow from west to east, the opposite direction of trade winds |
| polar easterly | winds near a pole, blows from the east |
| altitude | height above the earth's surface |
| precipitation | moisture that falls to the earth from the atmoshere |
| atmosphere | the layer of gasses that surrounds the earth |
| mesosphere | coldest layer of the atmosphere |
