AnswersOK-Environmental Science - Sem A -CA- 36431AUnit Test

Unit Test — Unit test Answers

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Which of the following cycles does not involve living organisms?

A
carbon cycle
B
oxygen cycle
C
rock cycle
D
nitrogen cycle
2
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Which system serves as the interface between the other spheres?

A
geosphere
B
hydrosphere
C
atmosphere
D
biosphere
3

Which of the following can be natural sources of water pollution?

A
volcanic activity
B
earthquakes
C
algae blooms
D
all of the above
4

__________ helps organisms transport nutrients.

A
Soil
B
Sap
C
Water
D
Wind
5

What device can be used to make measurements globally?

A
rain gauge
B
buoy
C
satellite
D
thermometer
6

How is nitrogen returned to the atmosphere during the nitrogen cycle?

A
It is returned to the atmosphere in a process called nitrogen fixation.
B
It is returned to the atmosphere through denitrification.
C
It is returned to the atmosphere through cellular respiration.
D
It is returned to the atmosphere through evapotranspiration.
7

A large portion of precipitation in the rainforest occurs as a result of _______.

A
perspiration
B
respiration
C
oxidation
D
transpiration
8

Which of the following cycles is crucial to living organisms?

A
phosphorus
B
water
C
carbon
D
all of the above
9

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

A
T
B
F
10

Which of the following statements about the interaction of Earth’s systems is true?

A
The interaction between Earth’s systems is limited to a response to human activity.
B
The Earth’s system interact using positive feedback only.
C
The Earth’s systems interact using negative feedback only.
D
All of the Earth’s systems interact with each other.
11

Carbon in the ocean originates from the atmosphere.

A
T
B
F
12

How are the carbon, oxygen, and nitrogen cycles vital to sustaining life on Earth?

A
Carbon, oxygen, and nitrogen are vital components of life on Earth.
B
The carbon, oxygen, and nitrogen cycles allow vital elements to return to usable form by organisms.
C
The carbon, oxygen, and nitrogen cycles are an important interface between biotic and abiotic factors.
D
All of the above are reasons the carbon, oxygen, and nitrogen cycles are vital to life on Earth.
13

How does water enter the atmosphere?

A
Liquid water evaporates from lakes when heated by the sun.
B
Frozen water sublimates from ice and snow.
C
Liquid water is lost from tree leaves during evapotranspiration.
D
All of the above.
14

The amount of sunlight received at Earth's surface fluctuates more at the poles than the equator.

A
T
B
F
15

According to the GLOBE maps viewed online, it can be inferred that solar energy is not the only factor affecting average global temperature because _______.

A
the area between the equator and pole have distinct seasons that switch back and forth as the Earth orbits around the sun
B
the south pole experiences mild temperature fluctuations with large variations in solar energy while the opposite is true for the north pole
C
the poles have extremes in the level of solar energy and extremes in temperature
D
a and c
16

How are the carbon, nitrogen, and oxygen cycles similar?

A
They are all biogeochemical cycles.
B
They all involve an interaction between living and nonliving elements.
C
They are all part of the Earth system.
D
All of the above.
17

What role do aquifers play in the water cycle?

A
They store water in the ground.
B
They transfer water to the air.
C
They are the main source of water on Earth.
D
They move water through capillarity.
18

Trees obtain carbon from _______.

A
decaying organisms
B
sunlight
C
the atmosphere
D
none of the above
19

Cycles are essential to all living organisms.

A
T
B
F
20

The atmosphere is unaffected by changes in the geosphere.

A
T
B
F

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