science winds/atmosphere
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Created by:
samanthalanin301 on May 6, 2012
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23 terms
Terms | Definitions |
|---|---|
 wind | is air that is moving parallel to the ground(air that moves up or down is not called wind) |
| global winds | move across the entire planet cover large areas can not always feel them on the ground blow at same speed and in the same direction |
| local winds | move across small areas blow low in atmosphere can always feel then on the ground |
| how can you measure wind | anemometer- measures how fast wind blows wind vane- tells which direction the wind is going in |
| in which atmospheric layer does the temp. decrease as altitude increase | -thermoshpere/ stratoshere -mesophere/troposhere |
| atmosphere | thin layer of air that protects the earth's surface from extreme temperature and harmful sun rays |
| atmospheric pressure | molecules closer to the surface are now more densely packed then those higher in the atmosphere because of the mass of gases pressing down from higher in the atmosphere |
| how many layers are in the atmosphere | 5 |
| solids include | dust, salt and pollen |
| liquids include | water droplets,and droplets from volcanoes |
| what forms smug | pollutants mixed together with oxygen and other chemicals |
| atmospheric gases include | nitrogen (78) oxygen (21) carbon dioxide, water vapor, argon (0-4) |
| ozone layer | protects earth from harmful rays |
| volcanoes produce | nitrogen and carbon dioxide but little oxygen |
| troposphere | contains water vapor and asses where planes fly where weather takes place |
| stratosphere | protects from sun contains ozone layer |
| mesosphere | coldest region meteors are visible |
| thermoshere | temp. is high rays from sun are absorbed |
| exosphere | very few molecules largest layer space station satellites |
| ionshere | radio waves travel in between thermoshere and mespshere |
| radiation | waves |
| convection | flow moves through gasses and liquids needs molecules |
| conduction | contact moves through solids needs molecules |
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