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Ch.15
Studty Guide
| Question | Answer |
|---|---|
| List the examples of local winds. | land and sea breeze |
| What are auroras and where are they found? | shimmering lights found in the ionosphere (thermosphere) |
| Our ozone layer absorbs which type of harmful radiation from the sun | UV rays 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? | oxygen and nitrogen |
| Describe air pressure. | the measure of the force with which air molecules push on a surface |
| What happens to air pressure as altilude increases? | as altitude increases pressure decreases |
| Describe jet steams. | narrow belts or high speed winds that blow in the upper troposphere and lower stratosphere |
| What is the greenhouse effect? | the process by which gases in the atmosphere absorbs thermal energy |
| Explain the 3 ways that heat is transferred? | conduction= material/ direct contact radiation= Em waves (can't touch) convection= energy through liquid or gas |
| Where do trade winds flow toward? | flow towards the equator |
| What does the coriolis Effect make the winds do? | makes wind curve |
| Describe the doldrums. | this is where trade winds meet; on the equator, very light winds- dull |
| What is the ozone layer? | layer of oxygen the absorbs most of the suns uv rays |
| Where is the ozone layer found? | found in the stratosphere |
| Describe the thermosphere. | uppermost layer of the atmosphere temperature inc. due to solar radiation. Aurora Borealis occurs 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 exhaust |
| Describe the movement of convection currents. | with a heat source cold sinking dense air pushing warm light less dense air up-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-exhaust chemicals |
| What is another name for distance above sea level? | altitude or elevation |
| What are global winds? | the combination of convections cells at every 30 degrees latitude; winds that blow across long distances |
| What does the name of 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 billionth |
| 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? | layer of gases that surround 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, trade winds Calm areas- doldrums, horse latitudes |
| What is global warming? | the increase in average temperature on earth |
| If air mass increases what happens to density? | as air mass increase the density increase |
| What type of winds blow over short distances? | local winds |
| How are all winds created? | Unequal heating of the earth's surface |
Created by:
lntkmv10
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