click below
click below
Normal Size Small Size show me how
Ch.15
Study Guide
Question | Answer |
---|---|
List the examples of local winds. | sea breeze and land breeze |
What are auroras and where are they formed? | A natural light display in the sky particularly in the high latitude regions and formed in the thermosphere. |
Our ozone layer absorbs which type of harmful radiation from the sun? | Ultraviolet radiation(U-V radiation) |
How much oxygen and carbon dioxide is found in our air? | o=21 percent CO2=1 pecent |
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. | Air pressure is the measure of the force with which air molecules push on a surface. |
What happens to air pressure as altitude increases? | The air pressure is decreases as you go up. |
Describe jet stream. | The jet streams:narrow belts of high-speed winds that blow in the upper troposphere and lower stratosphere. |
What is the greenhouse effect? | The normal process by which heat is kept in the atmosphere by trapping the warmth of the sun |
Explain the 3 ways that heat is transferred. | Thermal conduction, Convection and Radiation |
Where do trade winds flow toward? | flow toward the equator |
What does the Coriolis Effect make the winds do? | Northern Hemisphere, winds traveling north curve to the east, and winds traveling south curve to the west |
Describe the doldrums. | Doldrums: they are the trade winds of the Northern and southern hemispheres that meet in an are around the equator |
What is the ozone layer?Where is it formed? | layer of the upper atmosphere. Temp. icreases due to solar radiation. |
Describe the thermosphere. | Thermosphere stands for heat,and the thermosphere is the sphere where temperatures are highest. |
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 off faster and heats up faster. The unequal heating is called global warming. |
What is smog? | It is a type of air pollution |
Describe the movement of convection currents. | warm air rises over the equator and moves toward the poles, the air begins to cool. |
Which instrument measures air pressure? | barometer |
What is significant about the troposphere? | That is where people live and weather occurs here |
What kind of ways have humans created air pressure? | burning fossil fuels, and exhaust from cars |
What is another name for the distance between sea level? | altitude or elevation |
What are global winds? | global winds:The combination of convection cells found at every 30 degrees of latitude and the Coriolis effect produces patterns of air circulation |
What does the name of a wind tell you? | which direction it is going in and what kind of wind |
How much of the sun's energy actually reach the earth? | 2 billionths |
What property are the layers of the atmosphere based on? | temperature |
Which calm area is located around 30 degrees north and south latitude? | horse latitude |
What is the atmosphere? | The atmosphere is a mixture of gases that surrounds Earth. This protects us from uv rays. |
List the 3 global winds and the 2 calm areas. | global winds:trade winds, polar easterlies, westerlies calm winds: horse latitude and doldrums |
What is global warming? | Such an increase in average global temperatures is called global warming. |
If air mass increases what happens to density? | density increases |
What type of winds blow over short distances? | local winds |
How are all winds created? | unequal heating of the earths surface |