Land and Sea Breezes LAND & SEA BREEZES 6 th Grade Science.
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Transcript of Land and Sea Breezes LAND & SEA BREEZES 6 th Grade Science.
![Page 1: Land and Sea Breezes LAND & SEA BREEZES 6 th Grade Science.](https://reader036.fdocuments.net/reader036/viewer/2022062407/56649e435503460f94b36cce/html5/thumbnails/1.jpg)
Land and Sea Breezes
LAND & SEA BREEZES6th Grade Science
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WIND• Wind is the horizontal
movement of air from an area of high pressure to lower pressure.
![Page 3: Land and Sea Breezes LAND & SEA BREEZES 6 th Grade Science.](https://reader036.fdocuments.net/reader036/viewer/2022062407/56649e435503460f94b36cce/html5/thumbnails/3.jpg)
Two types of winds
Local Winds
- are the winds that blow over short distances.
Global Winds
- are the winds that blow steadily from specific directions over long distances.
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WIND
• It is caused by:
– 1.Differences in temperature.
– 2.Differences in pressure.
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DIFFERENCES IN TEMPERATURE
• 1. Warm air rises.– Warming air make the
molecules move faster and spread out.
– This makes the air less dense.
– Less dense air is light and will rise.
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Differences in Temperature
• 2. Cold air sinks.– Cooling air makes the
molecules move slower and group together.
– This makes the air more dense.
– More dense air will sink.
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Balloon
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DIFFERENCES IN PRESSURE
• 1. Rising air creates Low pressure.– If air is lifted up, that means there is Less air
pushing down on Earth.
• 2. Sinking air creates High pressure.– If air is sinking, then air is pushing down on
the surface of Earth with a High amount of pressure.
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The Creation of Wind• 1. Differences in temperature cause air to rise
and sink all over Earth’s surface.
• 2. Rising and sinking air creates high and low pressure.
• 3. The atmosphere does NOT like UNBALANCED PRESSURE SOOOO…
• IT TRIES TO EQUAL OUT PRESSURE BY MOVING AIR FROM HIGH TO LOW PRESSURE.
![Page 10: Land and Sea Breezes LAND & SEA BREEZES 6 th Grade Science.](https://reader036.fdocuments.net/reader036/viewer/2022062407/56649e435503460f94b36cce/html5/thumbnails/10.jpg)
Winds are created by …• 1. Heating the air, decreases pressure (warm air rises creating
a low pressure area).
• 2. Cool air rushes in to replace the warm air (cooler, denser, air produces high pressure).
• 3. As air goes from high pressure to low pressure, winds form.
• 4. Wind is a horizontal movement of air.
• 5.There are 2 types of winds: local & global.
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SEA BREEZE… Air moves from the sea during the day.
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Land BREEZE… air moves from the land at night.
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Mr. Fetch’s Earth Science Classroom
Convection
Convection is the main way the atmosphere is heated.
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Land & Sea Breezesu-tube
• http://www.authorstream.com/Presentation/griffinv3-269366-land-sea-breezes-earth-heating-20and-20sea-20breezes-jh-education-ppt-powerpoint/