AnswersGV 2019 - MPS Environmental Science Semester 2 SC631Skills Lesson: Proposing Solutions

Ocean Exploration Answers

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1
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It is crucial to study ocean microbes because _______.

A
they control the major biogeochemical cycles that keep Earth’s biosphere in balance
B
they are a significant source of greenhouse gases and pollution
C
they are frequently used as food sources in developing nations
D
they provide a significant alternative energy source used to replace coal and oil
2
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The exploration of the mid-Cayman rise is intended to discover _______.

A
what life may have been like before the evolution of photosynthesis
B
the origins of photosynthesis
C
life in shallow, coastal regions
D
the chemical composition of undersea mountains
3

Which of the following best explains the role of deep sea coral reefs in the environment?

A
They are responsible for fouling fishing lines.
B
They are a quick-growing food source for deep water predators.
C
They provide a critical habitat for many other organisms.
D
They are a record of past climate conditions.
4

Which of the following is not true concerning the Nereus?

A
It is able to dive deeper than any other man-made vehicle.
B
It will be used to explore previously unreachable areas of the ocean.
C
It is a combination automated and remote-operated vehicle.
D
It has the capacity to carry two crew members.
5

Which of the following best explains why autonomous underwater explorers (AUEs) will provide revolutionary new information on ocean processes?

A
Previously there has not been a method to study small-scale ocean processes.
B
Previously there has been too much study of small-scale ocean processes.
C
Previously there has not been a method to study large-scale ocean processes.
D
Previously there has been too much study of large-scale ocean processes.
6

Which of the following is a possible application for discoveries made during ocean exploration?

A
food
B
medicine
C
commercial products
D
all of the above
7

Methane hydrates in the ocean are a significant source of methane.

A
T
B
F
8

The U.S. Integrated Ocean Observing System (IOOS) is a government program to collect information in the Gulf of Mexico.

A
T
B
F
9

Autonomous underwater explorers will be used to gather large-scale ocean information.

A
T
B
F
10

Ocean exploration is limited by _______.

A
lack of technology
B
expense
C
favorable weather conditions
D
all of the above
11

The U.S. Integrated Ocean Observing System (IOOS) is best described as _______.

A
a public and private partnership to increase understanding of the oceans
B
a program to improve ocean safety
C
a partnership aimed at protecting the environment
D
all of the above
12

Scientists are concerned about the release of methane from the arctic because _______.

A
as a greenhouse gas methane is 20 times more potent than carbon dioxide
B
the mass of the arctic’s methane is comparable to that of the Earth’s coal beds
C
global warming appears to be accelerating its release
D
all of the above
13

The Nereus is simply an unmanned deep-sea remote operated vehicle (ROV).

A
T
B
F
14

Which of the following best explains the importance of studying the ocean carbon cycle?

A
The oceans have a significant impact on the levels of atmospheric gases.
B
It is a new field of ocean science.
C
The ocean releases one quarter of the carbon dioxide in the atmosphere.
D
All of the above
15

How have submersibles benefited ocean exploration?

A
They allow exploration of arctic waters.
B
They reduce the expense of ocean exploration.
C
They allow the deep ocean to be explored.
D
All of the above
16

Deep sea corals can be hundreds or thousands of years old.

A
T
B
F
17

Which of the following is not true concerning marine microbes?

A
They account for up to 90 percent of the ocean biomass.
B
They play a minor role in biological and geochemical cycles.
C
They are a potential source of new classes of antibiotics.
D
They may posses genes that will help scientists combat global climate change.

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