Earth Ch. 7 Test

UVB

 

Which type of UV radiation is only partially absorbed by the ozone layer, allowing some of it to reach the earth's surface?

 

 

How does air normally move in the atmosphere?

 

high pressure to low pressure

 

What name is given to the upper atmosphere because of its distinct layers?

 

heterosphere

 

What is the normal value of atmospheric pressure at sea level?

1013 millibars

 

Which type of current cause most of the earth's weather?*

convection current

 

What global winds occur at the earth's surface in high latitudes?

polar easterlies

The upper-troposphere waves associated with the polar front jet stream are called ————.

Rossby waves

 

The process in which the temperature of a gas rises as the gas is compressed with no heat lost is called ————-

Adiabatic heating

Auroras that occur in southern latitudes are called ———-

aurora Australis

 

High-altitude winds that are concentrated in narrow, meandering bands of rapidly moving air are called _______ ___________.

jet streams

downslope wind caused by cooling air near a slope.

katabatic wind

wind that occurs when a large amount of dense, cold air spills over a mountain range.

fall wind

What effect causes wet and dry seasons through a seasonal change in wind direction?

monsoon effect

 

What feature marks the bottom of the mesosphere?

stratopause

 

What form of heat transfer heats cool air in contact with warm ground?

conduction

 

What two gases help give the earth a mild and stable climate?*

carbon dioxide and water vapor

What temperature layer of the atmosphere is at the bottom of the heterosphere?

thermosphere

What direction does an anticyclone revolve in the Southern Hemisphere?

counterclockwise

What causes the Intertropical Convergence Zone (ITCZ)?*

low pressure

 

If all other factors were equal, which of the following  locations would you expect to have the highest air pressure?

Dead Sea (414 m below sea level)

Which of the following is required for monsoons to form?*

Land near a large body of water

 

What causes anabatic winds?*

Heated air near a mountain slope rises.

air caused by a transfer of heat

wind

A warm,dry wind that travels down a mountain slope

Foehn

A weather map on North America shows a large area with winds rotating clockwise.  Is this a high or low? How do you know?

high; because outward flowing winds rotate clockwise.