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Ch.15
Study Guide
Question | Answer |
---|---|
List the examples of local winds. | Mountain breezes, valley breezes and sea breezes |
What are auroras and where are they found? | a light caused by the sun's radiation and are found at the poles |
Our ozone layer absorbs which type of harmful radiation from the sun? | It absorbs UV radiation (ultraviolet radiation) |
Which global wind blows away from the poles to the west? | Polar easterlies |
How much oxygen and carbon dioxide is found in our air? | Oxygen:21% Carbon dioxide:Less than 1% |
What are the 2 most abundant gases found in the air? | Nitrogen and Oxygen |
Describe air pressure | The air above us that pushes down on the earths surface |
What happens to air pressure as altitude increases? | It decreases |
Describe jet streams. | Its the weight of tiny particles of air or air molecules! |
What is the greenhouse effect? | The trapping of the sun's warmth in a planet's lower atmosphere |
Explain the 3 ways that heat is transfered | Radiation,convection,and conduction |
where do trade winds flow towards? | The equator |
What does the Coriolis effect make the wind do? | Apparent curving |
Describe the doldrums | It is very calm and dull |
What is the ozone layer? Where is it found? | It absorbs most of the ultraviolet radiation ( UV) reaching the earth from the sun.It is located in the stratosphere |
Describe the thermosphere. | The thermosphere is where all of the planes and helicopters fly |
What is the most common atmospheric gas? | Nitrogen gas |
What parts of the earth cools off faster and heats up faster? What does this unequal heating create? | Land does and unequal heating causes low density and high air pressure |
What is smog? | Smog is the mixture of smoke and fog |
describe the movement of convection currents | |
Which instrument measures air pressure? | |
What is significant about the troposphere? | |
What kind of ways have humans created air pollution? | |
What is another name for the distance above sea level? | |
What are global winds? | |
What does the name of a wind tell you? | |
How much of the sun's energy actually reaches the Earth? | |
What property are the layers of the atmosphere based on? | |
Which calm area is located around 30 degrees north and south latitude? | |
What is the atmosphere? | The atmosphere is an invisible mix of gases that surround the earth |
What is global warming? | |
If air mass increases what happens to density? | |
What type of winds blow over a short distance? | |
How are all winds created? |