AnswersEarth and Space Science Sem 2Unit 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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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
3

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.
4

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
5

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.
6

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
7

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.
8

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.
9

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.
10

Why does a coastal area have less variation in temperature than a noncoastal area?

A
Temperatures feel cool all year round due to the duration of daylight.
B
Temperatures change from warm to cool depending on the season.
C
The temperatures on land change more rapidly than temperatures on water.
D
The air is warm because warm water moves from the equator to the poles.
11

Which substance may lower air temperatures after a volcanic eruption?

A
lava
B
sulfur dioxide
C
carbon dioxide
D
water vapor
12

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
13

What major factors play a role in global warming?

A
decrease in human activity and normal climate conditions
B
natural factors and human activity
C
natural factors and normal climate conditions
D
decrease in human activity and natural factors
14

Which statement best describes how the distance from a large river affects an area’s climate in the summer?

A
Regions far from rivers experience less variation in air temperatures.
B
Regions far from rivers have land surfaces that remain cool during the entire season.
C
Regions near rivers have water surfaces that rapidly change in temperature from cold to hot.
D
Regions near rivers experience winds from the water that prevent extreme temperature changes.
15

Which greenhouse gas is produced by commercial refrigeration and air conditioning systems?

A
carbon dioxide
B
fluorinated gas
C
nitrous oxide
D
methane
16

Which definition best describes global warming?

A
a long-term change in the Earth's climate
B
a long-term increase in the Earth's average temperature
C
a long-term change in the climate of a region or a city
D
solar heat that is radiated out into space
17

During which two months do both the Northern and Southern Hemispheres receive the same amount of energy from the Sun?

A
December and June
B
January and July
C
March and September
D
May and November
18

Which is a possible result of higher air temperatures caused by climate change?

A
decrease in strength of hurricanes
B
freezing of polar ice caps
C
rapid evaporation of water in the soil
D
increase in human population numbers
19

Which describes how prevailing winds affect precipitation in a region?

A
Prevailing winds force cool, moist air from oceans to rise.
B
Prevailing winds blow in the opposite direction as normal winds.
C
Prevailing winds cause huge air masses, both warm and cool, to move.
D
Prevailing winds that move over land usually cause the most precipitation.
20

What effects do wind patterns have on climate?

A
They move warm water toward the east.
B
They change the amount of precipitation in a region.
C
They carry warm or cooled water very long distances.
D
They cool Pacific waters and increase hurricane activity in the western Atlantic.

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