Transcript Coriolis Effect

 Using
what you know about
CONVECTION how do you
think wind is formed?
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A wind is the horizontal movement of air from
an area of high pressure to an area of low
pressure.
Wind is caused by differences in air
temperature and pressure. As hot and cold air
move from one place to another it attempts to
equalize pressure.
◦ Sometimes other factors can cause wind to blow
differently than this expected pattern.
Local winds are breezes that blow
over SHORT distances.
 Local winds are caused by
unequal heating of Earth's Surface
within a small area.
 This usually happens near a large
body of water.
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 During
the daytime, the sun heats the
land and the water.
 The land heats up faster, so the air
above the land gets warmer and rises.
 The cooler air from the sea rushes in to
take its place
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In the evening, the sun sets.
The land and the water cool off, but the land
cools faster than the water.
The water is then warmer than the land.
The warmer air over the sea rises and the
cooler air above the land rushes in to take its
place.
Answer the question
using these words.
WORD BANK
• Convection current
• Low pressure
• High pressure
• Sun
• Heat/Cold
• Clouds/water cycle
• Wind
http://www.classzone.com/books/earth_science/terc/content/visu
alizations/es1903/es1903page01.cfm?chapter_no=visualization
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Label one side of your paper Night – Land Breeze
and one Day – Sea Breeze
For both pictures, draw the land and water.
Using your notes, decide where it is warm and cold
(over the land and sea)
Draw the arrows showing the movement of the air
(wind)
Label the low pressure and the high pressure
Use Blue to show cold and red to show warm
Describe what’s happening in each picture using the
following key words.
Land
Land
Sea
more dense
Cool air
Cool air
Warm air
Warm air
Less dense
less dense
Convection current
More dense
Sea
Rushes
rushes
Low pressure area
low pressure area
More dense
Less dense
More dense
Less dense