weather unit vocab 7
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| atmosphere | the mixture of gasses around Earth
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| air pressure | measure of force which particles in the air push on an area
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| troposhere | lowest layer of the atmosphere
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| stratosphere | 2nd layer of atmosphere, 50km up
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| mesosphere | meteors are destroyed here, 3rd layer of atmosphere
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| ionosphere | layer above the stratosphere
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| exosphere | last layer of atmosphere
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| thermosphere | thermal energy is transferred by touch
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| ozone layer | protects earth from harmful radiation
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| greenhouse effect | process which gases in the atmosphere adsorb and give off infrared radiation
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| temperture | average kinetic energy in the air
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| thermal energy | total kinetic energy in the air
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| thermal expansion | increase in volume that results from an increase in temperture
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| heat | is energy transferred between objects a different temperture
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| radiation | transfer of energy through electromagnetic waves
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| convection | transfer of energy through movement of matter
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| conduction | transfer of energy through direct contact
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| wind | movement of air
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| Coriolis effect | the apparent curving of the path an object is going even if it is going straight
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| Jet stream | narrow belts of high speed winds that travel west to east
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| local wind | movement of air over short distances
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| land breeze | during night the cooler air of the land blows to the sea
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| sea breeze | during the day the cooler air of the sea blow onto the land
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| mountain breezes | at the night the cool breezes come off the mountain to the valley
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| valley breeze | at day the cool air of the valley blows to the mountains
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| global winds | the wind systems across Earth
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| trade winds | 30 degree to equator blow to west
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| westerlies | between 30 degrees and 60 curve east
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| polar easterlies | between poles and 60 degrees, cold sinking air
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| horse latitudes | at 30 degrees air sinks
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| doldrums | the trade winds meet here, at the equator
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| weather | the condition of Earth's atmosphere at a certain time
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| humidity | amount of water vapor in air
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| relative humidity | amount of water vapor in the air compared to the amount in the land
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| dew point | temperature saturation when more condensation then evaporation
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| precipation | any form of water falling to Earth's surface
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| cirrus | wispy clouds made of ice
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| cumulus | form in fair weather, can produce rain
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| stratus | they spread, low and dark can produce rain
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| air pressure | force of air pushing at a certain point
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| high air pressure density | air sinks and moves outward, clockwise
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| low air pressure density | air rises can cause clouds and rain
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| air mass | large volume of air in temp. is constant
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| front | forms between air masses
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| warm front | follows cold air front
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| cold front | pushes warm air up
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| stationary front | warm,cold front stay still
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| occluded | the force of a cold front pushing a warm front up
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| evaporation | liquid turns into solid
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| condensation | when water vapor becomes a liquid
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| runoff | when water goes back to a large body of water
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