AnswersOK-Environmental Science AUnit Test

Unit Test — Unit test Answers

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1
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Where is oceanic crust thickest?

A
at mid-ocean ridges
B
in the center of ocean plains
C
at deep-sea trenches
D
none of the above
2
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The two principal ways to describe Earth’s structure are based on the _______.

A
chemical composition and thickness of layers
B
chemical composition and mechanical properties of layers
C
mechanical properties and thickness of layers
D
the composition and viscosity of minerals
3

A _______ is formed when tectonic plates collide.

A
rift
B
subduction zone
C
fault
D
all of the above
4

The movement of continents has affected weather patterns by _______.

A
separating the continents
B
creating mountain ranges
C
changing the location of the continents
D
all of the above
5

Weathering and erosion both contribute to the disintegration of rocks.

A
T
B
F
6

Which of the following is a result of natural erosion?

A
desert sands
B
lost seed germination
C
widened valleys
D
all of the above
7

Which of the following is an example of chemical weathering?

A
waves washing over rocks on the beach
B
acid rain falling on sidewalks
C
ice forming in the cracks of rocks
D
wind blowing against rocks
8

Artificial erosion does not impact the environment any more than natural erosion does.

A
T
B
F
9

Which of the following best describes the interaction between Earth’s crust and living organisms?

A
Raw materials essential for life are cycled through Earth’s crust.
B
Fossil fuels are a valuable energy source for the biosphere.
C
The continental crust allowed the evolution of life on land.
D
The crust recycles the organic materials in sedimentary rock.
10

What is true of both earthquakes and volcanoes?

A
They are caused by movement of tectonic plates.
B
They are potentially devastating to local environments.
C
They occur inland less frequently than along coasts.
D
All of the above are true of both earthquakes and volcanoes.
11

Animals do not contribute to natural erosion.

A
T
B
F
12

Which is an example of natural erosion?

A
ice forming in cracks of rocks
B
acid rain falling on sidewalks
C
waves washing over rocks on the beach
D
water washing away soil in an area with off-road vehicles
13

Which of the following statements about artificial erosion is true?

A
Artificial erosion can occur 100 times faster than natural erosion.
B
Farming practices do not contribute to artificial erosion.
C
Artificial erosion causes a loss of fertile soil.
D
Artificial erosion is only caused by recreational activities.
14

Flooding can occur as a result of an earthquake.

A
T
B
F
15

Which of the following best explains the importance of Earth’s crust to living organisms?

A
The continental crust allowed the evolution of life on land.
B
The crust provides raw materials necessary for life.
C
The crust allowed the formation of fossil fuels.
D
The rock cycle recycles sedimentary rocks formed from animal shells.
16

Ocean ridges form as a result of _______.

A
slab pull
B
the upwelling of magma from the asthenosphere
C
sediment being deposited from the ocean
D
all of the above
17

Erosion occurs based on the movement of water, wind, or ice over a surface and typically moves on the downward-creep slope because of

Answer not available
18

Which of the following is true concerning continental crust?

A
It does not contain radioactive elements.
B
It mostly contains heavier and denser minerals than the mantle.
C
It efficiently transfers heat from the mantle to the surface.
D
None of the above
19

Oceanic crust is best described as _______.

A
thin and young
B
continuously replenished
C
a majority of Earth’s crust
D
all of the above
20

Volcanoes impact both the air and land of the surrounding environment.

A
T
B
F

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