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Carbon Cycle

Total questions: 22

Worksheet time: 11mins

Name
Class
Date
1.
What does NOT produce carbon dioxide?
a)
Photosynthesis
b)
Burning Fossil Fuels
c)
Animal respiration
d)
Plants decaying
2.
TRUE or FALSE?
All of the carbon in existence is continually recycled in the carbon cycle.
a)
True
b)
False
3.
Organisms that do not decompose can be buried and become what?
a)
water
b)
nutrients
c)
air
d)
fossil fuels
4.
Carbon can be found in...
a)
The atmosphere
b)
Soil
c)
Fossil fuels
d)
All of the above
5.
Which of the following removes carbon from the atmosphere?
a)
Combustion
b)
Respiration
c)
Photosynthesis
d)
Death
6.
Combustion is another word for __________.
a)
Transportation
b)
Respiration
c)
Fossil Fuels
d)
Burning
7.
Respiration is the process by which animals take in _____ and release _____. 
a)
photosynthesis, air
b)
carbon, oxygen
c)
oxygen
d)
oxygen, carbon dioxide
8.
What process occurs when coal (fossil fuel) is used for energy?
a)
Decomposition
b)
Combustion
c)
Pressurization 
d)
Respiration 
9.
The diagram shows the flow of organic molecules through an ecosystem. What two processes are identified by the labels X and Y?
a)
X : Respiration
Y : Predation
b)
X : Adaptation
Y : Decomposition
c)
X : Fermentation
Y : Nitrogen Fixation
d)
X : Decomposition
Y : Respiration
10.
Organisms that do not decompose can be buried and become what?
a)
water
b)
nutrients
c)
air
d)
fossil fuels
11.
Which of the following is an example of a decomposer?
a)
Owl
b)
Fish
c)
Tree
d)
Mushroom
12.

C6H12O6 is also known as glucose (sugar). Where is it found?

a)

Plants

b)

Animals

c)

Both plants and animals

d)

Neither plants or animals

13.

The circulation of the element Carbon among Earth's atmosphere, land, oceans, and organisms is called _____________.

a)

the Carbon Cycle

b)

the Oxygen Cycle

c)

the Carbon dioxide Cycle

d)

the Water Cycle

14.

When animals eat plants, the carbon that the plant contains is absorbed by the animals.

a)

True

b)

False

15.

How do animals get carbon?

a)

By eating plants and or other animals.

b)

They absorb it from the atmosphere.

c)

From the ground

d)

They do not get carbon from anywhere.

16.

What are fossil fuels made from?

a)

Plants and animals that are buried underground for millions of years.

b)

They absorb it from the atmosphere.

c)

Water

d)

Wind

17.

When humans EXHALE, we release __________________.

a)

Oxygen

b)

Carbon Dioxide

c)

Nitrogen

d)

Water

18.

What is CO2?

a)

Carbon Monoxide

b)

Carbon Trioxide

c)

Carbon Dioxide

d)

Oxygen

19.

Which of the following are fossil fuels?

a)

Coal, water, oil

b)

Oxygen, coal, oil

c)

Coal, Oil, Natural Gas

d)

None of the above

20.

Which of the following is correct?

a)

There is as much carbon on earth as when it was formed

b)

Carbon is being created whenever it is recycled

c)

Carbon is lost every time it is recycled

d)

Carbon changes to different forms and is never recovered

21.

What is the greatest contributor to atmospheric carbon?

a)

burning garbage

b)

burning biomass

c)

transportation

d)

household usage

22.

What are two (2) ways to reduce the carbon emissions from passenger cars?

a)

Use less expensive gas

b)

Carpooling

c)

Public Transportation

d)

Driving only passenger cars