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Terms in this set (18)
(Forming Wind) Earth is heated by the sun unevenly
causing some areas to be warmer than others
(Forming Wind) Wind
is the movement of air from areas of higher pressure to areas of lower pressure
(Forming Wind) Earth receives different amount of the Sun's energy
because it is curved
(Forming Wind) Equator is located in the area of the Earth that curves outward an
therefore receive's more radiation than areas to the north or south.
(Forming Wind) Heated air at the equator is less dense so
it is displaced from the cooler air from the north and south creating a convection current.
(Forming Wind) Cold air comes from the polar regions,
which receive less radiation from the sun. The cold air sinks and moves along Earth's surface.
(Coriolis Effect) Rotation of the Earth causes moving air and water to appear to turn
to the right north of the equator and to the left south of the equator.
(Coriolis Effect) Flow of air creates distinct wind patterns
that influence weather and travel
Wind systems that effect the weather patterns and travel both today and in the early days of seafaring sailors
(Global Winds) Four main types of global winds are discussed
(Global Winds) Polar Easterlies
-are found near the poles
-Northern hemisphere blow from northeast to southwest
-Southern hemisphere blows from southeast to northwest
(Global Winds) Doldrums
-are located near the equator and are a windless rainy zone
-sun heats the air near the equator causing it to rise and form a low pressure area with little wind. Rising air then cools and causes it to rain.
(Global Winds) Prevailing Westerlies
-blows from west to east
-responsible for the movement of our weather systems
(Global Winds) Trade Winds
-air descending to Earth's surface near the equator north and south creates steady winds
-named for the trade routes they helped establish
-narrow belts of strong winds located near the top of the troposphere
-moves faster in the winter because the difference between cold and warm air is greatest
-Z wind systems help to move storm surges across our country: (
Local wind storms
-smaller wind systems affect local weather
-2 wind systems are prevalent near large bodies of water
-in daytime the land is heated more then the water. The heated air over the land rises and is replaced by the cooler, denser air from over the water. a convection current results and wind blows from the water towards land
at night the land cools quicker than the water. air over the water is warmer, less dense and rises. cooler denser air over the land replaces the warm air over the water. air then moves from the land towards the water.
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