Climate Change — Unit test Answers

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1
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Which is a negative effect of rising ocean temperatures?

A
the drying out of fertile land and the formation of dust bowls
B
the flooding of low-lying coastal areas
C
the faster evaporation of water in the soil
D
the decreased frequency of major storms
2
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Which statement best describes monsoons?

A
They force cool, moist air from oceans to rise.
B
They are winds that blow in the opposite direction of a normal wind.
C
They bring heavy rain in the winter and in the summer.
D
They influence precipitation as wind moves near a mountain.
3

In December, a city in the Southern Hemisphere has warm weather all month long.What causes this to happen?

A
The city experiences fewer hours of daylight.
B
The city is experiencing a winter solstice.
C
There is a high concentration of the Sun’s rays in that region.
D
The Sun reaches its highest point in the sky during this month.
4

Which is a possible consequence of decreasing air quality resulting from global warming?

A
drying out of fertile lands
B
flooding of low-lying coastal areas
C
melting of glaciers and polar ice caps
D
decrease in population due to health threats
5

Which describes an effect that ocean currents have on short-term climate change?

A
Ocean currents increase the strength of prevailing winds, which can cool the air and land.
B
Ocean currents can carry cold water, which can cool the air and land.
C
Ocean currents increase hurricane activity, which can raise the temperature of the air and land.
D
Ocean currents carry cold water, which may not affect hurricane activity and lower the temperature of the air and land.
6

How does altitude affect climate patterns in a region?

A
Areas at high elevations have cooler temperatures.
B
Air continues to warm as it rises to a higher elevation.
C
Tropical regions do not have many differences in altitude.
D
High-altitude areas have less variation in seasonal temperatures.
7

Which correctly lists the three weather factors that are indicators of climate change?

A
sunsets, wind patterns, clouds
B
ocean currents, ice cores, temperature
C
temperature, wind patterns, ice cores
D
wind patterns, temperature, ocean currents
8

What must happen for most areas on Earth to experience all four seasons?

A
The Sun must reach its highest point in the sky.
B
The Northern Hemisphere must experience winter.
C
The axis must be tilted at a certain angle that remains unchanged.
D
The north end of Earth’s axis must always point away from the Sun.
9

Which describes one characteristic of both El Niño and La Niña?

A
Both are causes of long-term climate change.
B
Both create warmer water.
C
Both occur in the Pacific Ocean.
D
Both are causes of hurricane activity.
10

Which is one way that analyzing ice benefits scientists who study ancient climates?

A
Scientists can analyze frozen volcanic dust to help predict eruptions.
B
Scientists can study the layers of ice cores to gather information about past atmospheric composition.
C
Scientists can use sand grains in ice to make inferences about the climate area.
D
Scientists can study tree rings in ice to learn more about past climates.
11

Which is one source that scientists use to reconstruct past climate conditions?

A
fossils frozen in glaciers
B
daily temperatures
C
the tilt of Earth’s axis
D
running water
12

Which is a natural factor that causes long-term climate change?

A
Earth’s position
B
pollen grains
C
fossils
D
ice cores

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