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WorksheetsMrs Disney Y10 - Biology carbon cycle
Total questions: 20
Worksheet time: 17mins
Name
Class
Date
1.
When humans burn fossil fuels, most of the carbon quickly enters the as carbon dioxide.
a)
Water
b)
Atmosphere
c)
Sun
d)
Air
2.
Which one of these does not add CO2 to the atmosphere?
a)
cooking with gas
b)
planting trees
c)
burning wood
d)
riding in a bus
3.
Combustion is another word for _______________.
a)
a train
b)
a bus
c)
a dog
d)
burning
4.
What does not produce carbon dioxide?
a)
Photosynthesis
b)
Burning Fossil Fuels
c)
Animal respiration
d)
Plants decaying
5.
How do living organisms return carbon to the atmosphere in the carbon cycle?
a)
respiration and photosynthesis
b)
decomposition and respiration
6.
In the carbon cycle, producers take in the gas __
a)
carbon dioxide
b)
oxygen
c)
nitrogen
d)
carbon monoxide
7.
How does the carbon in grass become part of a lion?
a)
The lion eats the grass
b)
Carbon from grass doesn't end up in a lion.
c)
The carbon ends up in the lion's food chain.
d)
The lion breathes in carbon given out by the plant
8.
In what process is Carbon transformed into chemical energy?
a)
Photosynthesis
b)
Respiration
c)
Primary Production
d)
Secondary Production
9.
All of the carbon in existence is continually recycled in the carbon cycle
a)
True
b)
False
10.
Which of the following removes carbon from the atmosphere?
a)
Combustion
b)
Respiration
c)
Photosynthesis
d)
Death
11.
Organisms that do not decompose can be buried and become what?
a)
water
b)
nutrients
c)
air
d)
fossil fuels
12.
If the plant population decreased, the amount of carbon would _________.
a)
Stay the same
b)
Increase
c)
Decrease
13.
Why is the ocean important to the carbon cycle?
a)
It keeps sediment containing carbon underwater for millions of years
b)
The ocean gives out more carbon then it takes in (increases global warming)
c)
The ocean isn't important to the carbon cycle.
14.
Carbon can be found in...?
a)
The atmosphere
b)
Inside of the Earth
c)
Fossil fuels
d)
All of the above!
15.
Which of the following processes can maintain the level of carbon dioxide in the atmosphere?
a)
Photosynthesis
b)
Respiration
c)
Combustion
d)
ALL OF THEM
16.
Carbon dioxide is produced by the burning of fossil fuels
a)
True
b)
False
17.
Bacterias that decompose dead plants release _____________ back into the atmosphere.
a)
water
b)
nitrogen
c)
oxygen
d)
carbon
18.
Ocean coral and oysters use carbon to create _________.
a)
oxygen
b)
shells
c)
leaves
d)
food
19.
Since the mid- 1800's, _____________ activity has significantly altered the carbon cycle.
a)
animal
b)
plant
c)
unknown
d)
human
20.
Burning fossil fuels has raised the concentration of ___________ in the atmosphere.
a)
oxygen
b)
rain
c)
carbon
d)
nitrogen
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