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23 Cards in this Set

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solstice
either of two times of yyear when the sun's rays shine directly overhead at noon at the furthest points north or south, and that mark the beginning of summer and winter; in the Northern Hemisphere, the summer is the longest day and winter is the shortest
equinox
each of the two days in a year on which day and night are equal in length; marks the beginning of spring and autumn
weather
the condition of the atmosphere at a particular location and time
climate
the typical weather conditions at a particular location as observed over time
precipitation
falling water droplets in the form of rain, sleet, snow, or hail
rain shadow
the land on the leeward side of hills or mountains that gets little rain from the descending dry air
hurricane
a storm that forms over warm, tropical ocean waters
tornado
a powerful funnel-shaped column of spiraling air
typhoon
a tropical storm, like a hurricane, that occurs in the western Pacific
blizzard
a heavy snowstorm with winds of more than 35 mph and reduced visibility of less than one-quarter mile
drought
a long period w/o rain or with very minimal rainfall
convection
the transfer of heat in the atmosphere by upward motion of the air
El Nino
a weather pattern created by the warming of the waters off the west coast of South America, which pushes warm water and heavy rains towards the Americas and produces drought conditions in Asia and Australia
greenhouse effect
the layer of of gases released by the burning of coal and petroleum that traps solar energy, causing global temperature to increase
tundra
the flat, treeless lands forming a ring around the Arctic Oceanl the cimate region of the Arctic Ocean
permafrost
permantely frozen ground
ecosystem
an independent community of plants and animals
biome
regional ecosystem
deciduous
a named characteristic of broadleaf trees, such as maple, oak, and birch
rain forest
a forest region located in the Tropical Zone with a heavy concentration of different species of broadleaf trees
coniferous
another word for needleleaf trees
savanna
the term for the flat, grassy, mostly treeless plains in the tropical grassland region
steppe
the term used for the temperate grassland region in the Northern Hemisphere