Natural Events and the Environment Answers

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1
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Study the image.

Question illustration
A
from west to east
B
from north to south
C
toward the equator
D
toward the middle latitude
2
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Study the images of two different fronts.Based on arrow movement, why is the front shown in item A different from the front shown in item B?

Question illustration
A
Warm air rises above cold air in item A, while two air masses collide in item B.
B
Cold air mixes with warm air in item A, while two air masses barely move in item B.
C
Warm air is pushed upward near cold air in item A, while a boundary forms in item B.
D
Two air masses form a boundary in item A, while warm air rises above cold air in item B.
3

The images show two different fronts.Which fronts are shown?

Question illustration
A
Item A shows a cold front, and item B shows a warm front.
B
Item A shows an occluded front, and item B shows a cold front.
C
Item A shows a warm front, and item B shows a stationary front.
D
Item A shows a stationary front, and item B shows an occluded front.
4

What causes air masses to move?

A
When prevailing westerlies shift directions and move toward the west.
B
Weather conditions change rapidly to produce storms.
C
A collision takes place between two natural wind patterns.
D
Long, narrow bands of wind blow in the upper atmosphere.
5

Which kind of weather usually forms over the northwest United States in the summer because of maritime polar air masses?

A
fog
B
dry heat
C
heavy snow
D
heavy rain
6

Study the image of an air mass.

Question illustration
A
maritime polar
B
continental polar
C
maritime tropical
D
continental tropical
7

Which front forms widespread clouds, rain, or snow?

A
cold front
B
warm front
C
occluded front
D
stationary front
8

Which major type of air mass typically brings cool, dry weather?

A
maritime polar
B
continental polar
C
maritime tropical
D
continental tropical
9

Study the image, which describes how rapid changes in weather conditions occur.

Question illustration
A
Air masses are barely moving.
B
Air masses are colliding with each other.
C
Jet streams are forming in the upper atmosphere.
D
Weather conditions are remaining steady and unchanged.
10

How is a warm front different from a cold front?

A
Warm fronts cause snow flurries in the winter, while cold fronts cause several days of rainy weather.
B
Warm fronts cause rapid changes in weather, while cold fronts cause several days of cloudy weather.
C
Warm fronts cause several days of cloudy weather, while cold fronts cause heavy snow in the winter.
D
Warm fronts cause thunderstorms in the summer, while cold fronts cause rain when the air is humid.

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