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37 Cards in this Set
- Front
- Back
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Weather |
condition of Earth's atmosphere at a specific time or place |
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Atmosphere |
envelope of gases that surrounds the planet |
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Water Vapor |
water in form of gas |
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Density |
amount of mass in given volume |
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air pressure |
weight of a column of air pushing on an area |
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barometer |
instrument used to measure air pressure |
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mercury barometer |
long glass tube that measures air pressure |
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aneroid barometer |
airtight metal chamber that detects weather changes |
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altitude |
elevation; distance above sea level |
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troposphere |
lowest layer where weather occurs |
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stratosphere |
2nd layer that contains the ozone layer |
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mesosphere |
middle layer that keeps Earth safe from meteoroids |
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thermosphere |
outermost layer that contains ionosphere and exosphere |
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ionosphere |
lower layer of thermosphere |
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exosphere |
outer layer of thermosphere, extends far out |
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electromagnetic waves |
energy from the sun
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radiation |
direct transfer of energy by electromagnetic waves
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infrared radiation |
not visible by humans but can be felt by heat |
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ultraviolet radiation |
sun gives off; invisible, can cause burns
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scattering |
particles and gases in atmosphere disperse in all directions
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greenhouse effect |
heat held in Earth's atmosphere
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temperature |
average amount of energy in motion
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thermal energy |
measures the total amount of energy in motionin the particles of a substance |
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thermometer |
device that measures temperature |
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heat |
thermal energy that is transferred from a hotter object to a cooler one
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convection |
transfer of heat by movement/circulation
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conduction |
transfer of heat between 2 substances by direct contact
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convection currents |
upward movement of warm air and downward motion of cooler air |
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wind |
the horizontal movement of air from an area of high pressure to an area of lower pressure
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anemometer |
instrument used to measure wind speed
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windchill factor |
a measure of cooling combining temp and wind speed
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local winds |
winds that blow over short distances
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sea breeze |
flow of cooler air from over an ocean or lake towards land
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land breeze |
flow of air from land to body of water
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global winds |
winds that blow steadily from specific directions over long distances
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Coriolis effect |
the effect of Earth's rotation on the direction of winds and currents |
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latitude |
distance in degrees north or south of equator
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