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ch 15
study guide
| Question | Answer |
|---|---|
| list examples of local winds | sea and land breeze,mountain valley |
| what are auroras and where are they found | shimmering lights found in the ionosphere |
| Our ozone layer absorbs which type of harmful radiation from the sun | UV or ultraviolet |
| . How much oxygen and carbon dioxide is found in our air? | O = 21% CO2 = less than 1% |
| Which global wind blows away from the poles to the west? | polar easterlies |
| What are the 2 most abundant gases found in the air? | nitrogen and oxygen |
| Describe air pressure. | the measure of force with wich air pressure push on a surface |
| What happens to air pressure 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 greenhouse effect? | the process by wich gases in the atmosphere absorb thermal enrgy |
| Explain the 3 ways that heat is transferred. | conduction = direct contact radiation = EM waves (cant touch) convection = enrgy through liquid or gas |
| Where do trade winds flow toward? | flow towards equator |
| What does the Coriolis Effect make the winds do? | makes winds curve |
| . Describe the doldrums. | this is where trade winds meet;on the equator, very light winds- dull |
| What is the ozone layer? Where is it found? | found in stratosphere, layer of oxygen that obsorbs most of suns UV rays uppermost layer of atmos. temp. increases due to solar radiation Aurora belts occur here |
| . Describe the thermosphere. | uppermost layer of atmos. temp. increases due to solar radiation Aurora belts occur here |
| What is the most common atmospheric gas? | nitrogen |
| What parts of the earth cools off faster and heats up faster? What does this unequal heating create? | land cools and heats fastest; creates wind |
| What is smog? | polluted air that forms when sunlight reacts with ozone and exaust. |
| Describe the movement of convection currents. | with heat source,cold sinking dense air pushes warm less dense air- continues in a cycle |
| Which instrument measures air pressure? | barometer |
| . What is significant about the troposphere? | weather occurs here |
| What kind of ways have humans created air pollution? | burning fossil fuels-exaust,chemicals |
| What is another name for the distance above sea level? | altitude or elavation |
| What are global winds? | combonation of convection cells at every 30 degrees winds blow accross long distances |
| . What does the name of a wind tell you? | wind name tells you where the wind is coming from |
| How much of the sun’s energy actually reaches the Earth? | 2 billonth |
| What property are the layers of the atmosphere based on? | temperature |
| Which calm area is located around 30 degrees north and south latitude? | horse latitudes |
| What is the atmosphere? | layers of gases that surrond the earth and protects us from UV and space objects |
| List the 3 global winds and the 2 calm areas | global winds- polar easterlies, westerlies and trade winds calm -doldrums and horse latitudes |
| . What is global warming? | the increase of average temperature on the earth |
| If air mass increases what happens to density? | air mass increases density increases |
| What type of winds blow over short distances? | local winds |
| How are all winds created? | unequeal heating of the earths surface |
Created by:
jakobf
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