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29 Cards in this Set
- Front
- Back
Water Cycle |
The continuous movement of water between the atmosphere and Earth's surface is called the water cycle. |
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Evaporation
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Evaporation is the process by which water molecules in liquid water absorb energy and escape into the air as water vapor. |
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Humidity |
Humidity is a measure of the amount of water in the air. |
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Relative Humidity
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Relative humidity is the percentage of water vapor that is actually in the air compared to the maximum amount of water vapor the air can hold at a particular temperature. |
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Psychrometer
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A psychrometer had two thermometers, a wet-bulb thermometer and a dry bulb thermometer. |
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Condensation |
Molecules of water vapor in the air become liquid water in the process of condensation. |
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Dew Point
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The temperature at which condensation begins is called the dew point.
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Cirrus
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Wispy, feathery clouds are known as cirrus. |
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Cumulus |
Clouds that look like fluffy, rounded piles of cotton are called cumulus. |
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Stratus
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Clouds that form in flat layers are called stratus.
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Precipitation |
Precipitation is any form of water that falls from the clouds and reached Earth's surface. |
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Air mass
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A huge body of air that has similar temperature, humidity, and air pressure at any given height is called an air mass. |
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Tropical
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Tropical, or warm, air masses from in the tropics and have low air pressure. |
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Polar
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Polar, or cold, air masses form North of 50˚ North latitude and south of 50˚ south latitude. |
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Maritime
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Maritime air masses form over oceans.
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Continental
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Continental air masses form over land. |
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Front
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The boundary where the air masses meet becomes a front. |
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Occluded |
The warm air mass is cur off, or occluded, from the ground.
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Cyclone
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A swirling center of low air pressure is called a cyclone.
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Anticyclone
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Anticyclones are high-pressure centers of dry air.
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Storm
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A storm is a violent disturbance in the atmosphere. |
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Thunderstorm
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A thunderstorm is a small storm often accompanied by heavy precipitation and frequent thunder and lighting.
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Lightning
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Lightening is a sudden spark, or electric discharge, as these charges jump between parts of a cloud, between nearby clouds, or between a clouds and the ground. |
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Tornado |
A tornado is a rapidly whirling, funnel-shaped cloud that reaches down from a storm cloud to touch Earth's surface.
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Hurricane |
A hurricane is a tropical cyclone that has winds of 119 kilometers per hour or higher.
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Storm Surge |
A dome of water that sweeps across the coast where the hurricane lands.
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Meteorologist |
Meteorologist are scientist who study the causes of weather and try to predict it. |
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Isobar |
Isobars are line joining places on the map that have the same air pressure.
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Isotherm |
Isotherms are line joining places that have the same temperature.
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