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The Cycles of Matter Answers

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1
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Which of the following does not take place in the water cycle?

A
precipitation
B
evaporation
C
carbonation
D
condensation
2
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The carbon cycle involves an exchange of carbon between the atmosphere and geosphere only.

A
T
B
F
3

The growing of plants, burning of wood, and decomposition of living matter demonstrate how carbon can be in the _______ at the same time.

A
atmosphere and biosphere
B
biosphere and geosphere
C
geosphere and atmosphere
D
atmosphere, biosphere, and geosphere
4

Which of the following does not cycle into the atmosphere?

A
the carbon cycle
B
the phosphorus cycle
C
the nitrogen cycle
D
the oxygen cycle
5

Which of the following statements is true?

A
The nitrogen cycle is the most important cycle for life.
B
The oxygen cycle is the least important cycle for life.
C
Life can be sustained without any of the cycles for life present.
D
All cycles of matter are equally important for life to be sustained.
6

What do the carbon, oxygen, and nitrogen cycles all have in common?

A
They all include an exchange of gases with the atmosphere.
B
None of the cycles are biogeochemical cycles.
C
They are all byproducts of photosynthesis.
D
They all sustain life, but living organisms have no part in the cycle.
7

Biogeochemical cycles on Earth serve a variety of different purposes. What do the biogeochemical cycles have in common?

A
They all serve the same function in sustaining life on Earth.
B
They all include only nonliving components of an ecosystem.
C
They are all essential for sustaining life on Earth.
D
They all include only living components of an ecosystem.
8

Nitrogen fixation _______.

A
is the process where nitrogen is converted to a usable form
B
is accomplished by plants when they break down soil
C
occurs as a result of photosynthesis
D
none of the above
9

In the BOREAS study, scientists are trying to determine if a large amount of carbon is being taken in by what biome?

A
rainforest
B
tundra
C
boreal forest
D
desert
10

Which of the following two cycles are the most closely related in their role in sustaining life?

A
carbon and nitrogen
B
water and nitrogen
C
carbon and oxygen
D
nitrogen and phosphorus
11

Where is the water stored during the water cycle?

A
the atmosphere
B
the ground
C
the ocean
D
all of the above
12

The need for energy, gained by respiration and photosynthesis, is the driving force of the oxygen cycle.

A
T
B
F
13

The sun is the ultimate source for energy on the Earth.

A
T
B
F
14

Biogeochemical cycles recycle water and natural elements throughout the biosphere to ensure that organisms do not run out of these substances. Diagram by NASA/Kevin Saff Diagram by Ilmari Karonen Which of the following processes plays an important role in cycling carbon, nitrogen, and phosphorus?

Question illustration
A
photosynthesis
B
transpiration
C
decomposition
D
respiration
15

What is likely to happen in the long term if the Earth continues to absorb more energy than it emits?

A
The Earth will discontinue recycling energy.
B
Organisms will begin to compensate for the change by incorporating more energy.
C
The overall temperature of the Earth will increase.
D
The nutrient cycles will happen more frequently.
16

What percentage of precipitation falls back onto land?

A
78%
B
92%
C
17%
D
22%
17

Which of the following does not take place in the water cycle?

A
precipitation
B
evaporation
C
carbonation
D
condensation
18

Biogeochemical cycles on Earth serve a variety of different purposes. What do the biogeochemical cycles have in common?

A
They all serve the same function in sustaining life on Earth.
B
They all include only nonliving components of an ecosystem.
C
They are all essential for sustaining life on Earth.
D
They all include only living components of an ecosystem.
19

Biogeochemical cycles recycle water and natural elements throughout the biosphere to ensure that organisms do not run out of these substances. Thiobacillus denitrificans is a specialized species of bacteria that obtains its energy from carbon dioxide and inorganic nitrogen-containing compounds such as nitrates in its environment. It is used in the bioremediation of groundwater that contains excess nitrate. How does Thiobacillus denitrificans help bioremediate groundwater?

A
nitrification
B
denitrification
C
nitrogen fixation
D
decomposition
20

Photolysis is a part of which cycle?

A
phosphorus
B
oxygen
C
nitrogen
D
carbon

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