Atmosphere Weather Factors
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30 terms
Terms | Definitions |
|---|---|
 weather | the conditions of Earth't atmosphere at a particular time |
| atmosphere | the envelope of gases that surrounds the planet that makes conditions on Earth suitable for living things. |
| density | density= mass/ volume If there are more molecules in a given volume, the density is greater. If there are fewer molecules, the density is less |
| Pressure | the force pushing down on an area or surface |
| Air pressure | the weight of a column of air pushing down on an area. Desner air exerts more pressure than less dence air. |
| water vapor | water in the atmosphere in the form of a gas |
| barometer | an instrument used to measure air pressure |
| altitude | the elevation is the distance above sea level |
| troposphere | the lowest layer of earth's atmosphere |
| stratosphere | the 2nd layer of the atmosphere and contains the ozone layer |
| mesosphere | the layer of the atmosphere that protects earth's surface from being hit by meteoroids |
| thermosphere | the outermost layer of earth's atmosphere is temperature |
| pollutant | harmful substances in the air, water, or soil |
| photochemical smog | a brown haze that develops in sunny cities |
| acid rain | rain that contains more acid than normal |
| temperature | the adverage amount of motion for a particulas substance |
| thermal energy | the total amount of energy a substanve has in the form of heat |
| heat | the transfer of thermal energy from one object to another because of a differenece in temperature |
| conduction | the direct transfer of thermal energy from one substance to another... (TOUCH) |
| convection current | the circulation of a fluid as ti altermately heats up and cools down |
| convection | the transfer of thermal energy by the movement of a fluid |
| wind | the horizontal movement of air from an area of high pressure to an area of lower pressure |
| anemometer | an instrument used to meausre wind speed |
| wind chill factor | a measure of cooling combining temperature and wind speed |
| local winds | winds that blow over a short distance |
| global winds | winds tha blow steadily from a specific directions over long distances |
| coriolis effect | the change that earth's rotation causes in the motion of objects and that explains how winds curve |
| jet stream | bands of high-speed winds about 10 kilometers above earth's surface |
| water cycle | the continual movement of water among earth's atmosphere, oceans, and land surface through evaporation, condensation, and prcipitation |
| evaporation | the proves by which molecules in liquid water escape into the air as water vapor |
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