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36 Cards in this Set
- Front
- Back
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water vapor |
water in the form of a gas |
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density |
the amount of mass in a given volume |
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air pressure |
the force pushing on an area or a surface |
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barometer |
an instrument used to measure air pressure |
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mecury barometer |
a long glass tube that is closed on one end and open on the other |
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aneroid barometer |
an aneroid barometer has an airtight metal chamber. the metal chamber is sensitive to changes in the air pressure. |
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altitude |
the distance above sea level |
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troposphere |
a layer of the earths atmosphere in which weather occurs |
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stratosphere |
the second layer of the earths atmosphere and contains the ozone layer |
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mesosphere |
the layer of the earths atmosphere which protects earth from being hit by meteoroids |
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thermosphere |
the outer most layer in the earths atmosphere |
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ionosphere |
the first layer of the thermosphere |
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exosphere |
the second layer of the thermosphere |
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electromagnetic waves |
a form of energy that can move through a vacuum of space |
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radiation |
a form of electromagnetic energy |
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infrared |
not visible to humans but can be felt as heat |
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ultraviolet radiation |
radiation from the sun that can cause sun burns |
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scattering |
dust size particles and gases in the atmosphere disperse light in all directions |
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greenhouse affect |
it keeps earths atmosphere at a temperature that is comfortable for most living things |
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temperature |
an average amount of energy of motion of each particle of a substance |
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thermal energy |
the total energy of motion in the particles of a substance |
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thermometer |
a device that measures temperature |
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heat |
a thermal energy that is transferred from a hotter abject to a cooler object |
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convection |
the transfer of heat by the movement of a fluid |
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conduction |
transfer between two substances that are in direct contact |
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convection currents |
heat transferred mostly in the troposphere |
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wind |
the movement of air parallel to earths surface |
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anemometer |
a tool that measures wind speed |
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windchill factor |
the increased cooling that a wind can cause |
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local winds |
the unequal heating of earths surface within a small area |
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global winds |
the unequal heating of earths surface in a large area |
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coriolis effect |
the way earths rotation makes winds curve |
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latitude |
the distance from the equator measured in degrees |
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weather |
the condition of earths atmosphere at a particular time and place |
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sea breeze |
the flow of cooler air from over an ocean or lake toward land |
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land breeze |
the flow of air from land to a body of water |
