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chapter15
study guide
| Question | Answer |
|---|---|
| describe air pressure | the weight of the air above you |
| what happens to air pressure as altitude increases | air pressure decreases because there is less air on top of you |
| what are three ways heat is transfered | radiation, thermal conduction, and convection |
| what does the corialis effect do to winds | makes them move in curved paths |
| describe the thermosphere | it is the farthest away from Earth and is extremly hot |
| what is significant about the troposphere | we live in it |
| how have humans caused air pollution | driving in cars and burning fossil fuels |
| how much of the sun's energy reach Earth | about 2 billionth |
| what is the atmosphere | layers that protect Earth |
| how are all winds created | earth's rotation |
| list the examples of local winds | sea breeze, land breeze |
| what are auroras and where are they found | the northern lights, thermosphere |
| our ozone layer absorbs what | UV radiation |
| how much oxygen and carbon dioxide is in our air | nitrogen-78% |
| winds that blow poles to west | poler eastilies |
| what two gases are found in our air | nitrogen and oxygen |
| describe jet streams | narrow belt of high speedwinds that blow in the upper troposphere |
| what is the green house effect | energy is trapped in the atmosphere and heats it |
| where do trade winds flow towards | west-equator |
| describe doldrums | low pressure near the equator |
| what is the ozone layer where is it found | stratosphere, layer of oxygen that absorbs most UV rays |
| what is the most common atmospheric gas | nitrogen |
| What parts of the earth cool off and heat up faster | land,land and sea breezes |
| What is smog | polluted air that forms when sunlight reacts with ozone and exhaust |
| Describe the movement of convection currents | cold air sinks pushing warm air up and it continues in a cycle |
| Which instrument isused to measure air pressure | A barometer |
| What is another name for the distance above sea level | altitude |
| What are global winds | Caused by differences in air pressure |
| What does the name of a wind tell you | where it came from |
| What property are the layers of atmosphere based on | temperature |
| Which calm area at 30% lattitude | Horse latitude |
| List 3 global winds and the calm areas | Trade, westerlies, esterlies and horse lattitudes, doldrums |
| What is global warming | increase in average temp. |
| If air mass increases what happens to density | It decresas |
| What winds blow short distaces | local |
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200316321
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