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15 Cards in this Set

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Wind
The horizontal movement of air from an area of high pressure to an area of lower pressure.
Cirrus
Wispy, feathery clouds made mostly of ice crystals that form at high levels above about 6 km.
Coriolis effect
The way Eath's rotation makes windds in the Northern Hemisphere curve to the right and winds in the Southern Hemisphere curve to the left.
Cumulus
Clouds that form less than 2 km above the ground and look like fluffy, rounded piles of cotton.
Front
The area where air masses meet and do not mix.
Humidity
A measure of the amount of water vapor in the air.
Isobars
Lines on a map joining places that have the same air pressure.
Isotherms
Lines on a map joining places that have the same temperature.
Jet streams
Bands of high-speed winds about 10 dm above the Earth's surface.
Mesosphere
The middle layer of Earth's atmosphere, the layer in which most meteoroids burn up.
Occluded
Cut off, as the warm air mass at an occluded front is cut off from the ground by cooler air beneath it
Pressure
The amount of force pushing on a surface or area.
Relative Humidity
The percentage of water vapor in the air compared to the maximum amount the air can hold at that temperature.
Stratus
Clouds that form in flat layers
Troposphere
The lowest layer of Earth's atmosphere, where weather occurs.