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Science Weather
| Term | Definition |
|---|---|
| thunderstorm | weather system that produces large winds, hail, heavy rain, lightning, and thunder |
| hurricane | large, swirling, tropical weather system; considered the most powerful storm on Earth |
| blizzard | winter storm with winds at least 51 km/hr and a temperature of -12 degrees C or below |
| front | the boundary where air masses of different temperatures or moisture meet and do not mix; where two air masses meet |
| tornado | rotating funnel-shaped cloud that reaches down from storm clouds; causes major destruction to objects on Earth's surface; twisting funnel cloud |
| air mass | large body of air with similar temperatures and moisture throughout |
| thermometer | an instrument for measuring temperature; measures temperature |
| meteorologist | a scientist who studies weather patterns |
| thunder | the sound that occurs as air expands rapidly when lightning strikes; sound made by rapidly heating and expanding air caused by lightning |
| lightning | an electrical discharge between parts of a cloud or between a cloud and the ground |
| barometer | an instrument for measuring the pressure of the atmosphere; measures air pressure |
| anemometer | an instrument used to measure the force and speed of the wind ; measures air speed |
| beaufort | scale used to measure wind speed |
| stratus | layered clouds |
| sleet | rain that freezes as it falls |
| low | cloudy weather occurs in ___ pressure areas |
| snow | soft, white crystalline flakes |
| fog | a thick, ground-level mist |
| gauge | precipitation is measured with a rain_______ |
| forecast | prediction of weather in the future |
| radar | calculates distance of clouds by echoing radio waves |
| Wind Vane | Measures wind direction |
| Sling psychrometer | Measures relative humidity |