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Ch. 15

study guide

QuestionAnswer
1. List the examples of local winds. mountain,valley,land,andsean breezes
2. What are auroras and where are they found? they are made up lights in the ionosphere and are located at the south and north poles.
3. Our ozone layer absorbs which type of harmful radiation from the sun? UV rays
4. How much oxygen and carbon dioxide is found in our air? 21%oxygen and 1%carbon dioxide
5. Which global wind blows away from the poles to the west? Westerlies
6. What are the 2 most abundant gases found in the air? Nitrogen,Oxygen
7. Describe air pressure. the amount force with which air molecules push on a surface.
8. What happens to air pressure as altitude increases? Air pressure decreases
9. Describe jet streams. Jet streams are narrow belts of high-speed winds that blow in the upper troposphere and lower strato sphere.
10. What is the greenhouse effect? This is when gases and liquids conduct thermal energy and warm the ozone layer.
11. Explain the 3 ways that heat is transferred. Heat can be transfered as radiated,conducted.orconvection
12. Where do trade winds flow toward? they curve to the west in the northern hemisphere and east in the southern hemisphere
13. What does the Coriolis Effect make the winds do? they make winds move in a circular motion.
14. Describe the doldrums. a band of low pressure surounding the equator
15.What is the ozone layer? Where is it found? this is the layer that protects us from the sun's harmful radiation and is located in the stratosphere.
16. Describe the thermosphere. it is the hottest layer because many gases react and mix.
17. What is the most common atmospheric gas? Nitrogen
18. What parts of the earth cools off faster and heats up faster? What does this unequal heating create? This creates global warming
19. What is smog? this is when vehical exhaust get traped by the sunlight and creates a cloud of smokey pollution.
20. Describe the movement of convection currents. it moves in circular patterns
21. Which instrument measures air pressure? barometer
22. What is significant about the troposphere? we live in it and lots of weather happens here
23. What kind of ways have humans created air pollution? by cars and our everyday lifestyles
24. What is another name for the distance above sea level? altitude
25. What are global winds? long wind patterns that cover the earth
26. What does the name of a wind tell you? air flowing through things
27. How much of the sun’s energy actually reaches the Earth? one billionth
28. What property are the layers of the atmosphere based on? gases
29. Which calm area is located around 30 degrees north and south latitude? horse latitudes
30. What is the atmosphere? a level of gases that make up our living area and harmful areas too.
31. List the 3 global winds and the 2 calm areas. Polar Easterlies,Westerlies,and Trade winds doldrums and horse latitudes
32. What is global warming? the uneven level of temperatures rising and cooling over rapid periods of times.
33. If air mass increases what happens to density? it gets more dense
34. What type of winds blow over short distances? local winds
35. How are all winds created? weather
Created by: 200316339
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