wind. uneven heating not all parts of the earth are heated evenly. the equator gets the most energy...
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Wind
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Uneven Heating• Not all parts of the Earth are
heated evenly.
• The equator gets the most energy from the sun, the poles get the least.
• Air of different temperatures will mix. The mixing is wind.
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Hottest
Coldest
Coldest
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The Coriolis Effect• Movie 1. Movie 2
• The Coriolis effect is when air is swirled by the Earth rotating.
• Air moves counter clockwise North of the equator and clockwise South of the equator.
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Toilets and Sinks• It is a myth that the
rotation of the Earth causes the swirl of sinks and toilets.
• Some claim toilets and drains below the equator swirl the opposite way. This is not true.
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Remember
•Warm air rises
•Cold air falls
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WetWet
WetWet
WetWetDryDry
DryDry
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The Doldrums
•At the equator, the air goes straight up. Why?
•This is no good if you are sailing a boat. Why?
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Types of Winds• Winds that blow along the surface
are called Surface Winds. (Trade winds, Westerlies, Easterlies)
• Winds that blow far above the surface of the Earth are called High Altitude Winds. (Jet Stream)
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A Sea Breeze occurs when the water is
cooler than the land.
A Land Breeze occurs when the land is
cooler than the water.
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