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ch.15
study guide
| Question | Answer |
|---|---|
| List of examples of local winds? | land,sea,mountain,and valley breezes |
| What are auroras and where are they found? | shimmering lights found in the thermosphere (ionosphere) |
| Our ozone layer absorbs which type of harmful radation from the sun? | Ultraviolet Rays (UV) |
| How much oxygen and carbon dioxide is found in our air? | oxygen-21% carbon dioxide- less than 1% |
| Which global wind blows away from the poles to the west? | polar easterlies |
| What are the two most abudant gases found in the air? | oxygen and nitrogen |
| Describe air pressure? | air pressure is caused when gravity pulls gas molecules twoard the surface |
| What happens to air pressure as altitude increases? | as altitude increases air pressure decreases |
| Describe jet streams? | narrow belts of high speed winds that blow in the upper troposphere and lower stratosphere |
| What is the green house effect? | process by wich gases in the atmosphere absorb thermal energy. |
| Explain the 3 ways that heat heat is transferred? | convection=material/direct contact radiation=EM waves (can't touch)conduction=energy trough liquid or gas |
| Where do trade winds flow toward? | flow toward the equator |
| What does the coriolis effect make winds do? | makes winds in northern hemishere turn east and winds in the south turn west (winds cure) |
| Describe the doldrums? | this is where trade winds meet; on the equater,very light -dull |
| What is the ozone layer and where is it found? | found in the stratosphere, layer of oxygen that absorbs thermal energy |
| Describe the thermosphere? | upper most layer of the atmosphere with temperatures due to solar radiation and aurora borealis occurs here |
| What is the most common atmospheric gas? | nitrogen |
| What parts of earth cools off faster and heats up faster and what does this unequal heating create? | land cools and heats faster creating wind |
| What is smog? | smog happens when ozone and vechile exhaust react with sunlight |
| describe the movement of convection currents | cycle of warm air rising and cool air sinking causing a circular movement of air |
| which instrument measures air pressure | berometer |
| What is the significant about the troposphere? | where we live and mixes gases an weather occurs here |
| what kind ways have humans created air pollution? | automobiles,burning fossil fuels,industrial pullution |
| What is another name for the distance above sea level? | altitude or elevation |
| What are global winds? | combination of convection cells found every 30 degrees latitude; winds blow across distances |
| What does the name of a wind tell you? | where its coming from |
| How much of the sun's energy actually reaches the earth? | 2 billonth |
| What property are the layers of the atmospheric based on? | tematures |
| Which two calm areas are located around 30 degrees north and south latitude? | doldrums and housce latitudes |
| What is the atmosphere? | a mixture of gas that surronds the earth and protects us from UV rays |
| list the 3 global winds and the 2 calm areas? | GLOBALWINDS-polar easterlies,westerlies,trade winds CALM ARES-doldrums & hoarse latitudes |
| What is global warming? | an increase in average temperatures on earth |
| If air mass increases what happens to density? | as air mass increases density increases |
| How are all winds created? | differences in air pressure and the coriolis effect producing patterns of air circulation |
| What types of winds blow over short distances? | doldrums |
Created by:
nico2002
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