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Worksheetsbiogeo chemical cycles
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Matter can recycle through the biosphere because _________.
a)
matter is passed out of the body as waste
b)
biological systems do not use up matter, they transform it
c)
matter is assembled into chemical compounds
d)
biological systems use only carbon, oxygen, hydrogen, and nitrogen
2.
Which is NOT a process of the water cycle?
a)
precipitation
b)
freezing
c)
transpiration
d)
evaporation
3.
Where are denitrifying bacteria found?
a)
In the soil
b)
Root nodules
c)
In dead things
d)
In the atmosphere
4.
What is the only process that removes carbon from the atmosphere?
a)
combustion
b)
cellular respiration
c)
photosynthesis
d)
decomposition
5.
Where is carbon stored in the environment?
a)
Fossil fuels
b)
Wood of trees
c)
Calcium carbonate (shells and bones)
d)
All of the above
6.
What is this a picture of?
a)
Nitrogen cycle
b)
carbon cycle
c)
water cycle
d)
plant cycle
7.
Which of the following describes the role of nitrogen-fixing bacteria in the nitrogen cycle? Nitrogen-fixing bacteria convert
a)
nitrates intro nitrogen gas
b)
ammonia into proteins
c)
nitrogen gas into ammonia
d)
proteins into nitrates
8.
When nitrogen gas is turned in to a form that plants and animals can use is called
a)
Combustion
b)
Photosynthesis
c)
Decomposition
d)
Nitrogen Fixation
9.
The conversion of light energy, water and carbon dioxide into glucose and oxygen.
a)
Photosynthesis
b)
Nitrogen Fixation
c)
The Phosphorus Cycle
d)
The Water Cycle
10.
78% of the atmosphere is nitrogen.
a)
True
b)
False
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