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Science 4

Weather unit

TermDefinition
Air Pressure The pressure caused by the weight of a column of air pushing down on an area.
Altitude Elevation above sea level
Atmosphere The layer of gases that surrounds the Earth.
Density The amount of mass of a substance in a given volume. D=M/V
Air Mass A huge body of air that forms over a region characterizing it with similar temperature, humidity and pressure at any given height.
Front The boundary separating two or more different types of air masses.
Ozone A form of oxygen that has three oxygen atoms in each molecule instead of two.
Convection The transfer of heat by the movement of warmed matter (air or liquid)
Coriolis Effect The deflection of an object moving above the earth, rightward in the northern hemisphere and leftward in the southern hemisphere.
Wind The movement of air from an area of high pressure to an area of low pressure.
Temperature A measure of the average amount of thermal energy in a substance. (how hot or cold an object is)
Weather The condition of Earth's atmosphere at a particular time and place
Dew Point The temperature at which water vapor will start to condense out of the air as liquid water.
Radar Weather radar, also called weather surveillance radar (WSR) and Doppler weather radar, is a type of radar used to locate precipitation, calculate its motion, and estimate its type (rain, snow, hail etc.).
Fluid Anything that flows and fills a container such as a liquid or a gas.
Created by: Coco pannell