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Weather

Kieber/Showerman

QuestionAnswer
Particulates Solid particles in the air, such as dust, salt or ash
Air Pressure The pressure exerted on a surface by the weight o the atmosphere above the surface. Normally in mb (millibars)
Density The amount of mass per unit volume of a substance
Humidity The amount of water vapor in the air. High humidity increases the chances of clouds and precipitation.
Climate The long term average of weather in a particular place that is usually stable and changes slowly
Weather Description of what the atmosphere is like at a particular time and place.
Cirrus High, thin wispy clouds
Cumulus puffy, fluffy cotton looking clouds
Cumulonimbus vertical development clouds with precipitation
Stratus usually dark, lower level clouds that found in layers (Can produce rain)
Air Mass A large body of air that has the same conditions throughout
Warm Front The type of front that occurs when advancing warm air displaces cold air along a gradual slope; represented by evenly spaced red half circles on a weather.
Cold Front The type of front that occurs when cold dense air forces less dense warm air upward along a steep slope; represented by blue triangles pointing the direction the front is moving on a weather map.
Stationary Front The front that occurs when two air masses that have similar temperatures and pressures meet and neither advances; shown by a line with alternating red half circles and blue triangles facing in opposite directions on a weather map.
Occluded Front The type of front that occurs when a cold front overtakes a warm front and forces it upward causing the advancing cold air to collide with another cold air mass; shown on a weather map by alternating, evenly spaced, purple half circles and triangles.
Maritime Airmass Describes a moist airmass that originates over a body of water
Continental Airmass Describes a dry airmass that originates over land
Tropical Airmass Warm airmass that originates over the warm waters of the tropics and Pacific Ocean south of California
Polar Airmass Cold airmass that originates over Canada
Arctic Airmass Extremely cold and dry air masses that are created over land at very hight latitudes.
Created by: sorahbarnes