NEW
Font size
S
M
L
XL
WorksheetsCarbon cycle
Total questions: 12
Worksheet time: 6mins
Name
Class
Date
1.
Carbon enters the living world through the process of _____.
a)
photosynthesis
b)
respiration
c)
combustion
d)
decomposition
2.
Carbon enters the living world through the process of _____.
a)
photosynthesis
b)
respiration
c)
combustion
d)
decomposition
3.
In the atmosphere, carbon attaches to oxygen to form _____.
a)
C
b)
O
c)
CO2
d)
C6H12O6
4.
The process of burning is called _____.
a)
decomposition
b)
combustion
c)
respiration
5.
In this diagram, how many ways can carbon enter the living world?
a)
one
b)
two
c)
three
d)
four
6.
Burning fossil fuel has which effect in the carbon cycle?
a)
It removes carbon dioxide from the atmosphere.
b)
It puts carbon dioxide under the ground.
c)
It adds carbon dioxide to the atmosphere.
d)
It has no effect in the carbon cycle.
7.
What is the an important element for living things.
a)
Neon
b)
Hydrogen
c)
Helium
d)
Carbon
8.
Carbon enters the soil through dead plant or animal matter.
a)
Decomposition
b)
Respiration
c)
Photosynthesis
d)
Diffusion
9.
How is the burning of fossil fuels related to global warming?
a)
Magic
b)
Fuels are hot
c)
Greenhouse effect
d)
Photosynthesis
10.
Which process converts carbon in the form of sugar into carbon dioxide gas?
a)
Bioremediation
b)
Photosynthesis
c)
Respiration
d)
Transpiration
11.
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
12.
Plants use ____________ to make their own food
a)
Water
b)
Sunlight
c)
Carbon dioxide
d)
All of these
Reset
