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20 Cards in this Set

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Airmass
A huge body of air that has similar temperature, pressure,
and humidity throughout.
Tropical
A warm air mass that forms in the Tropics and has low air pressure.
Polar
A cold air mass that forms north of fifty degrees north latitude or south of fifty degrees south latitude and has high air pressure.
Occluded
Cut-off,as the warm air mass at a occluded front is cut-off from the ground by cooler air beneath it.
Anticyclone
a high pressure center of dry air.
lightning
a sudden spark, or energy discharge, caused when electrical charges jump between parts of a cloud and the ground.
Hurricane
A tropical storm that has winds of 119 kilometers per hour of higher; typically about 600 kilometers across.
Evacuate
to move away temporarily
Meteorologists
Scientists who study the causes of weather and try to predict it.
Isobar
Lines on a map joining places that have the same air pressure.
Climate
The average,year-after-year conditions of temperature,precipitation,winds,and clouds in an area.
Humid subtropical
A wet and warm climate area on the edge of the tropics.
Permafrost
permanently frozen soil found in the tundra climate region.
Greenhouse gas
gas in the atmosphere that trap heat.
Maritime
a humid air mass that forms over oceans.
continental
a dry air mass that forms over land
Front
the area where air masses meet and do not mix .
Cyclone
A swirling center of low air pressure.
Storm
A violent disturbance in the atmosphere
Tornado
A rapidly whirling funnel-shaped cloud that reaches down from a storm cloud to touch earth's surface, usually leaving a destructive path