| A | B |
|---|
| 0 degrees celsius | Freezing point of water in celsius |
| low | Fluids like air move to areas of this kind of pressure |
| rain | most of the world receives more rain or snow |
| rain gauge | instrument to measure amount of precipitation |
| pressure | winds caused by differences in this |
| cool air masses | more dense and flow under warm air masses |
| land breeze | land cools quicker than water |
| sea breeze | water cools slower than land |
| breeze to body of water | land breeze motion |
| breeze to land | sea breeze motion |
| local winds | winds developed due to unequal heating of Earth's surface |
| global winds | blow from specific directions from equator to poles over long distances |
| continental polar | air mass that is cold and dry |
| continental tropical | air mass that is warm and dry |
| maritime polar | air mass that is cold and moist |
| maritime tropical | air mass that is warm and moist |
| maritime air masses | wet weather associated |
| coriolis effect | rotation of earth causing winds to curve |
| temperature decreases | as air mass rises up a mountainside, temperature does this |
| relative humidity decreases | as air mass rises up mountainside, relative humidity does this |
| cold front | rapidly moving cold air mass runs into |
| hail | 5mm or more ice pellet formed inside cloud |
| sleet | small ice formed after leaving cloud |
| anticyclone | clockwise direction in Northern hemisphere bring dry, clear weather |
| cyclone | counter clockwise direction in Northern Hemisphere bring storms and precipitation |
| precipitation | any form of water that falls from clouds |
| stationary front | warm air mass and cold air mass meet, no movement |
| warm front | warm air mass collides with and moves over cold air mass |
| occluded front | Warm air mass on ground gets cut off and lifted by cool air mass underneath |
| cumulonimbus | large clouds that often produce thunderstorms |
| warm air mass | less dense and flows over cool air masses |
| dew | moisture formed on cool solid surfaces in humid weather |
| dew point | temperature at which moisture condenses |
| clouds form | water vapor becomes liquid water |
| cirrus | very high feathery clouds associated with clear weather |
| stratus | layered clouds that often cover much of the sky |
| cumulus | clouds that are puffy like cotton |
| anemometer | measure wind speed |
| wind vane or weather vane | determines direction of wind |
| barometer | measure air pressure |
