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37 Cards in this Set
- Front
- Back
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weather |
condition of the atmosphere at a certain place and time |
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atmosphere
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envelope of gasses surrounding earth |
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water vapor |
water in the form of a gas |
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density |
the mass in a given amount of volume |
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air pressure |
result of a column of air pushing on an area |
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barometer |
intrament used to measure air pressure |
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mercury barometer |
a long glass tube that's open on one end and closed on the other |
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aneroid barometer |
a long glass tube that is sealed |
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altitude |
the distance above sea level |
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troposphere |
lowest layer of the earths atmosphere |
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stratosphere |
extends from the top of the troposphere to about 50km above Earth's surace |
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mesosphere |
the middle layer of the atmosphere |
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thermosphere |
extends from 80km above the earths surface outward into space |
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ionosphere |
lower layer of the thermosphere |
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exosphere |
upper layer of the thermosphere |
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electromagnetic waves |
a form of energy that can move through the vaccum of space |
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radiation |
direct transfer of energy by electromagnetic waves |
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infrared radiation |
wavelengths that are longer than wavelengths for red light |
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ultraviolet radiation |
invisible form of energy with wavelengths that are shorter than wavelengths for violet light |
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scattering |
dust particles and gasses in the atmosphere disperse |
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greenhouse effect |
gasses that hold heat in hte earths atmosphere |
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Tempereature |
average amount of energy of motion of each particle in a substance |
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thermal energy |
total energy of motion in the particles of a substance |
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thermometor |
device that measures temperature |
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heat |
thermal energy |
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convection |
transfer of heat by the movement of a fluid |
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conduction |
transfer of heat by direct contact |
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convection currents |
the upward movement of warm air and downward movement of cold air |
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wind |
movement of air parallel to earths surface |
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anemometer |
measures wind speed |
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windchill factor |
increased cooling caused by wind |
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local winds |
winds that blow over short distances |
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Global winds |
winds that blow steadily from specific directions over long distances |
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Coriolis effect |
the way earths rotation makes winds curve |
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latitude |
distance from the equator measured in degrees |
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land breeze |
flow of air from land to a body of water |
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sea breeze |
flow of cooler air from over an ocean or lake toward land |
