Terms in this set (18)
The scientific study of the atmosphere and atmospheric phenomena; the study of weather and climate.
Scientist who studies the causes of weather and try to predict it.
-A huge body of air that has similar temperature, humidity, and air pressure throughout
-May spread over an area of millions of square kilometers and be up to 10 kilometer high
-influence the weather
Temperature and Humidity
Scientist classify air masses according to these two characteristics____________ and ____________.
Tropical Air Masses
air masses that form in the tropics (warm regions) and have low air pressure (warm less dense air rising)
Polar Air Masses
- forms over polar (cold) regions
-air masses that form north of 50 degrees north latitude and south of 50 degrees south latitude.
-have high air pressure (cold more dense air sinking)
Maritime Air Masses
Air masses that form over oceans (wet-very humid)
Continental Air Masses
Air masses that form over land, in the middle of continents, and are dry
Air mass that form over the North Pacific Ocean is cool and very wet (humid) (Cold Water)
-brings rain and snow to the Pacific Coast in the winter and cool, foggy weather in the summer
Air mass that forms over the North Atlantic Ocean brings cool, cloudy weather and precipitation to New England in the winter
-brings cool weather and fog during the summer (Cold water)
Air mass that develops over the warm areas of the Pacific Ocean (warm water)
-bring warm, humid air to California and the Southwest
Air mass from the Gulf of Mexico and the Atlantic Ocean (warm water)
-brings warm, humid air to the eastern United States
-Georgia's weather is influenced by this type of air mass
-in the summer they bring hot and humid weather, hurricanes and thunderstorms
-in winter they bring mild, often cloudy weather
Air mass that forms over Northern Canada, which brings extremely cold winter to the United States. (Cold and dry)
-In the summer air mass generally brings cool, dry weather
Air mass that forms over the deserts of northern Mexico and the Southwestern United States
-brings clear, dry and hot weather in the summer
the boundary between two air masses with different temperatures and densities
-the air mass meet, but do NOT mix
-weather occurs along this boundary
-major wind belt in the United States
-push air masses from west to east
-weather in the United States typically moves from west to east because of this prevailing winds..
-areas of low pressure in the Earth's atmosphere
-rising warm less dense air coming together
-areas of High pressure
-cold more dense air sinking
-air moves from areas of high pressure (cold) to areas of low pressure (warm)
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