Weather and Climate – Air Masses Fronts and Water in the Air – Flashcards
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Weather
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Condition of earths atmosphere at a particular time and place
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Water Cycle
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The continuous process by which water moves from Earths surface to the atmosphere and back
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Humidity
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The amount of water vapor in the air
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Humidity
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The amount of water vapor in the air
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Relative Humidity
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The comparison of the actual amount of water vapor to the amount of water vapor that would be in the air if it saturated.
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Condensation
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The change from a gas to a liquid
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Dew Point
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The temperature at which condensation begins
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Precipitation
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Any form of water that falls from clouds and reaches Earths surface. Rain, Snow, Sleet, Freezing Rain, Hail, Dew,
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Air Mass
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A huge body of air that has similar temperature, humidity, and air pressure throughout
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Maritime Polar Air Mass
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wet and cold air mass
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Maritime Tropical Air Mass
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warm and wet air mass
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Continental Polar Air Mass
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cold and dry air mass
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Continental Tropical Air Mass
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warm, dry air mass
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Arctic Air Mass
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forms over arctic regions, very cold
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Front
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The leading edge of a weather system
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Cold Front
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A front where cold air moves in under a warm air mass.
forms when cold air moves under warm air which is less dense and pushes air up (produces thunderstorms heavy rain or snow
forms when cold air moves under warm air which is less dense and pushes air up (produces thunderstorms heavy rain or snow
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Warm Front
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A front where warm air moves over cold air and brings drizzly rain and then are followed by warm and clear weather
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Stationary Front
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A boundary between warm and cold air masses that dont move, causing rain for several days.
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Occluded Front
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a front where a warm air mass is caught between two colder air masses and brings cool temperatures and large amounts of rain and snow
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Evaporation
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The change of a liquid to a gas
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Transpiration
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the process by which water evaporates from a plants leaves
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Infiltration
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The movement of water through soil.
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Percolation
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The movement of water through the openings in rock/soil
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Run Off
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Water that flows over the ground surface rather than soaking into the ground.
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Cumulus
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Latin for heap;
Fluffy, white clouds, usually with flat bottoms, that look like rounded piles of cotton.
Fluffy, white clouds, usually with flat bottoms, that look like rounded piles of cotton.
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Stratus
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Latin for stretched out;
Clouds that form in flat layers and often cover much of the sky.
Clouds that form in flat layers and often cover much of the sky.
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Cirrus
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Latin for curl;
Clouds that look thin, wispy, or feathery.
Clouds that look thin, wispy, or feathery.
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Rain
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water falling in drops from vapor condensed in the atmosphere
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Snow
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precipitation falling from clouds in the form of ice crystals
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Sleet
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Formed when rain falls through a layer of freezing air.
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Hail
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Ice pellets larger than 5 millimeters in diameter formed in cumulonimbus clouds by strong updrafts of wind
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Clouds
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A large mass of tiny, condensed water drops ie: cirrus, cumulus and stratus
