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32 Cards in this Set
- Front
- Back
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Water cycle |
A continuous movement of water among Earth's atmosphere, oceans, and land surface through evaporation,condensation, and precipitation.
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Evaporation |
The process by which molecules at the surface of a liquid absorb enough energy to change into a gaseous form
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Condensation |
The change in state from a gas to to liquid.
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Humidity |
The amount of water vapor in a given volume of air
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relative humidity |
The percentage of water vapor in the air compared to the maximum amount of water vapor that air can contain in a particular temperature.
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psychrometer |
An instrument used to measure relative humidity
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dew point |
The temperature at which condensation begins.
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cirrus |
Wispy, feathery clouds made of ice crystals that form at high levels
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cumulus |
Fluffy, white clouds, usually with flat bottoms,that look like rounded piles of cotton.
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stratus |
Clouds that form in flat layers often cover much of the sky. |
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precipitation |
Any form of water that falls from clouds and reaches Earth's surface as rain snow sleet or hail |
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rain guage |
An instrument used to measure precipitation
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flood |
An overflowing of water in a normally dry area
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drought |
A long period of low precipitation
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air mass |
A huge body of air that has similar temperature, humidity, air pressure at any given height |
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tropical |
A warm air mass that forms in the tropics and has low air pressure |
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continental |
A dry air mass that forms over land
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jet stream |
Bands of high-speed winds about 10 km above Earth's surface |
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cyclone |
A swirling center of low air pressure |
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anticyclone |
A high-pressure center of dry air
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storm |
A violent disturbance in the atmosphere
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blizzard |
A snowstorm with prolonged winds of 56 km per hour or greater and blowing snow that reduces visibility
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thunderstorm |
A small storm often accompanied by heavy precipitation and frequent thunder and lightning
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lightning |
A sudden spark or energy discharge caused when electrical charges jump between parts of a cloud,between nearby clouds, or between a cloud and the ground.
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hurricane |
A tropical storm that has winds of about 119 km per hour or higher
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storm surge |
a dome of water that sweeps across the coast where a hurricane lands
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tornado |
A rapidly whirling funnel-shaped cloud that reaches down to touch Earth's surface
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evacuate |
Moving away temporarily from an area bout to be affected by severe weather
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meteorologist |
Scientists who study the causes of weather and try to predict it
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isobar |
A line on a weather map that joins places that have the same air pressure
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isotherm |
A line on a weather nap that joins places that have the same temperatures
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front |
The boundary where unlike air masses meet but do not mix |
