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local winds: Winds that cover only a small distance
winds blow from H-->L pressure
Atmospheric Pressure:
Current: Gas or liquid that moves in a definite direction. Moves perpendicular to the ground.
the force that air exerts on everything on the earth.
Barometer: instrument used to measure pressure changes
Wind: Moves parallel to the ground.
Clouds
Review
Water vapor (warm, rising air) condenses as it reaches higher altitudes
The Transfer of Heat:
moves from a high temperature object to a lower temperature object
3 parts to a cloud:
*dust/other particles
*heat energy
*water
Occluded Front:
both a cold and cool air mass collide with a warm air mass, trapping and lifting the warm air
**clouds with rain/snow
two air masses move close to each other, neither has enough force to move the other, so they remain fixed
*rain, snow, fog or clouds
warm air mass overrides a cold air mass
**humid dry-rain/snow
dry-scattered clouds
Uneven heating of the Earth's surface
Evaporation: process that turns liquid to a gas
Does the amount of water in the water cycle change?
Condensation: process in which water vapor (gas) raises to high altitudes and cools, changing to liquid/ice
Temperature: amount of heat energy in matter
HOW TO PREDICT THE WEATHER?
DOPPLER RADAR-detects how air is moving
(pitch-high=near, pitch-low=farther away.
.
Satellite: Take pictures of the clouds
Ground Weather: thermometers, barometers, etc.