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4.5 weather
weather terms for SOL 4.5
| word | definition | category |
|---|---|---|
| air mass | huge body of air which has similar temperature and moisture | event |
| air pressure | weight of air in the atmosphere pressing down on earth | condition |
| anemometer | measures wind speed | instrument |
| barometer | measures atmospheric pressure | instrument |
| cirrus | wispy, high altitude clouds made up of ice crystals | cloud |
| cumulonimbus | towering, dark rain clouds with a nimbus, or halo, of gray-white | cloud |
| cumulus | puffy cotton-ball clouds that begin to form when water droplets condense at middle altitudes | cloud |
| front | boundary that forms when two air masses meet | event |
| hail | ice pellets when there are strong rising air currents | precipitation |
| humidity | amount of water vapor in the air | condition |
| hurricane | severe windstorm that originates over water, with wind speeds of at least 74 mph | storm |
| hygrometer | measures moisture in the air | instrument |
| precipitation | any form of water that falls from the atmosphere | condition |
| rain | water falling in temperatures abouve freezing | precipitation |
| rain gauge | measures the amount of precipitation that has fallen | instrument |
| sleet | rain that has frozen before reaching the ground | precipitation |
| snow | ice crystals falling from clouds | precipitation |
| stratus | dark, gray clouds that form a low layer, sometimes bring rain or snow showers | cloud |
| temperature | how warm or cold the air is | condition |
| thermometer | measures air temperature | instrument |
| thunderstorm | storm with heavey rain, lightning and thunder | storm |
| tornado | dangerous windstorm producing a funnel shaped cloud, with winds up to 300 mph | storm |
| wind direction | direction the wind is blowing | condition |
| wind speed | how fast or strong the wind is blowing | condition |
| weather vane | used to determine the direction the wind is blowing | instrument |