AnswersDCSS Earth Systems CR 24-25Unit Test

Unit Test — Unit test Answers

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1
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Which statement describes the impact of ocean currents on climate?

A
Ocean currents create changes in the temperature of air over land masses.
B
Ocean currents cause the temperature of air over large bodies of water to change.
C
Ocean currents move cold water from the equator to the poles, creating cool weather regions.
D
Ocean currents carry warm water from the poles to the equator to create warm weather regions.
2
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What happens to jet streams as they get closer to the equator?

A
They blow faster.
B
They do not change.
C
They dissolve.
D
They blow slower.
3

Which technology collects data for weather, climate, and environmental monitoring from space?

A
radar
B
satellites
C
weather stations
D
weather balloons
4

What are the characteristics of continental tropical air masses?

A
They have cool, dry air.
B
They have warm, dry air.
C
They have cool, moist air.
D
They have warm, moist air.
5

What occurs when the Northern Hemisphere experiences spring and the Southern Hemisphere experiences fall?

A
The Sun is directly overhead in the Northern Hemisphere.
B
The Southern Hemisphere receives more direct rays from the Sun.
C
The Northern and Southern Hemispheres get the same amount of energy from the Sun.
D
The Northern Hemisphere receives more daylight hours than the Southern Hemisphere.
6

Which substance may lower air temperatures after a volcanic eruption?

A
lava
B
sulfur dioxide
C
carbon dioxide
D
water vapor
7

The image below shows a weather service map.

Question illustration
A
shows isolines and isobars
B
shows types of precipitation
C
was created for newspapers
D
is probably not used to make forecasts
8

Which factors are causes of short-term climate change?

A
changes in wind and ocean currents
B
an increase of thunderstorms and rain
C
changes in daily wind shifts and snowfall
D
an increase of hurricanes and volcanic eruptions
9

Which important indoor safety measure should be taken during a thunderstorm?

A
Lie on the floor.
B
Cover your head.
C
Go to the basement.
D
Move away from windows.
10

Which weather event is typically brief, contains very strong winds, and leaves a path of destruction up to 50 miles long?

A
a cyclone
B
a hurricane
C
a thunderstorm
D
a tornado
11

How do scientists use ice to study ancient climates?

A
through glacial deposits and ice cores
B
through glacial deposits and ice ages
C
through ice cores and Earth’s ellipse
D
through Earth’s ellipse and ice ages
12

Which substance is a greenhouse gas that is emitted by human activities, is the most widespread, and remains in the air the longest?

A
water vapor
B
methane
C
fluorinated gas
D
carbon dioxide
13

What happens when volcanoes release greenhouse gases into the atmosphere?

A
The climate gets warmer.
B
The climate gets cooler.
C
Winter becomes longer.
D
Summer becomes longer.
14

What statement is accurate based on the study of tree rings?

A
Trees near the arctic will have thicker rings than those near the equator.
B
Trees with a pattern of thin rings indicate a wet, warm climate.
C
Size and density of tree rings can give information on past climates.
D
The number of rings indicate how much fruit the tree can bear.
15

Examine the weather map.

Question illustration
A
a hurricane
B
low pressure
C
high pressure
D
high temperatures
16

During the entire month of June, temperatures increase in the Northern Hemisphere and decrease in the Southern Hemisphere.What causes these temperature changes?

A
The Sun reaches its lowest point in the sky.
B
The Sun reaches its highest point in the sky.
C
The north end of Earth’s axis is tilted toward the Sun.
D
The south end of Earth’s axis is tilted toward the Sun.
17

How does La Niña affect the climate of the Pacific Ocean?

A
The ocean becomes cooler.
B
The warm water moves toward the east.
C
The cold water sinks deeper into the ocean.
D
The strength of the prevailing winds decreases.
18

Which tools do meteorologists use to help create weather forecasts?

A
guesses
B
weather service maps
C
opinions from weather watchers
D
personal observations
19

Which correctly lists three greenhouse gases?

A
oxygen, carbon dioxide, helium
B
carbon dioxide, nitrous oxide, methane
C
helium, methane, oxygen
D
methane, oxygen, carbon dioxide
20

How is cold front formation different from stationary front formation?

A
Stationary fronts form between warm and cold air masses, while cold fronts form when a cold air mass advances against a warm air mass.
B
Cold fronts form between two air masses that barely move, while stationary fronts form when a warm air mass is trapped between two cold air masses.
C
Cold fronts form when a warm air mass moves over a cold air mass, while stationary air fronts form when a cold air mass moves over a warm air mass.
D
Stationary fronts form when a warm air mass is trapped between two cold air masses, while cold fronts form when a warm air mass moves over a cold air mass.

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