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32 Cards in this Set
- Front
- Back
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atmosphere
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The air that surrounds the Earth. there are 5 layers
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5 layers of atmospher
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troposphere (closest to Earth)
stratosphere mesosphere thermosphere exosphere |
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air pressure
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the force put on a gien area by the weight of the air above it.
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altitude
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the height above the Earths surface.
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What is the difference of air temperature at high altitude versus low altitude
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Air pressure is LOWER at HIGH altitude.
Air pressure is HIGHER at LOW altitude. |
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What three things can change air pressure?
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Altitude
Temperature Water Vapor |
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How does temperature change air pressure?
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High temperature has lower air pressure.
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How does water vapor change air pressure?
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The more humidity (or more water vapor) the higher the pressure.
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barameter
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an nstrument that measures atmospheric pressure.
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Sea Breeze
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Air moves from sea to land
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Land Breeze
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air moves from land to sea
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as tempurature goes up, air preasure goes . . . ?
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down
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as temperatre goes down, air preasure goes . . . ?
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up
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convection
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heat traveling throught he movement of a gas or liquid
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climate
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the average weather conditions of a place.
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water currents
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an ongoing movement of ocean water
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air mass
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a large amount of air that has a similar temperature and humitidy throughout
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a front
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the meeting place between two air masses
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warm front
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warm air mass moves over a cold air mass. Ciris and stratus clouds. May be light steady rain.
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cold front
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cold air mass moves under a warm air mass. Towering clouds may form. Storms may form.
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thunderstorm
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a rain storm with thunder and lightining
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tornado
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a rotating funnle shaped cloud which contains winds going 480 km or 299 mph.
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hurricane
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a very large spinning storm with winds over 117 km, or 73 mph.
has a clock wise rotation. Northern Hemisphere |
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storm surge
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is from hurricane winds which form a blge of water that gets pushed by a storm.
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cyclone
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a large spinning storm like a hurricane but with counter clock wise rotation in the southern hemisphere
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monsoon
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a seasonal wind with heavy rain. Sotheast Aisa & Southwestern U.S.
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forcast
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"make a guess about" or guess what will happen based on what you know.
Scientists use satellites and weather ballons. |
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weather map
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shows the weather for a given area during one time
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The Jet Stream
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pushes air masses from West to East across the U.S.
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meteorologist
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a scientist who studies the weather
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How do winds move in a low pressure system?
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towards the center and in a counter clockwise direction
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How do winds move in a high pressure system?
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away from the center and in a clockwise direction.
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