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Cycles

Total questions: 22

Worksheet time: 16mins

Name
Class
Date
1.

Carbon is the main component of matter in living things.

a)

True

b)

False

2.

When breathing, animals exhale oxygen as a waste from gas exchange.

a)

True

b)

False

3.

We can find Carbon in:

a)

Atmosphere

b)

Lithosphere

c)

Hydrosphere

d)

Biosphere

e)

All are correct

4.

We can find Phosphorus in the atmosphere

a)

True

b)

False

5.

Nitrogen is a common limiting nutrient in nature, and agriculture.

a)

True

b)

False

6.

There, the ammonification, nitrification, and denitrification processes are performed by..

a)

Humans

b)

Bacteria

c)

Fungus

d)

Animals

7.

Nitrogenous compounds from dead organisms or wastes are converted into ammonia and the ammonia is converted into..

a)

a) Nitrites

b)

b) Nitrates

c)

c) Nitrogen

d)

d) a and b are correct

8.

Phosphorus is an essential nutrient found in the macromolecules of humans and other organisms, including DNA

a)

True

b)

False

9.

Which cycle is in this picture?

a)

Nitrogen

b)

Water

c)

Phosphorus

d)

Carbon

10.

Which cycle is in this picture?

a)

Nitrogen

b)

Water

c)

Phosphorus

d)

Carbon

11.

Which cycle is in this picture?

a)

Nitrogen

b)

Water

c)

Phosphorus

d)

Carbon

12.

Rainwater comes only from rivers

a)

True

b)

False

13.
What part of the water cycle does this picture show?
a)
condensation
b)
precipitation
c)
evaporation
14.
Which of these is an example of precipitation?
a)
snow
b)
air
c)
clouds
d)
vapor
15.
What is it called when plants give off water vapor as a waste product?
a)
condensation
b)
evaporation
c)
sublimation
d)
transpiration
16.
What happens to the nitrogen excreted by animals?
a)
Nitrates are reabsorbed by the animal.
b)
Nitrogen is converted into ammonia.
c)
Nitrogen is released back into the environment.
d)
Nitrates are converted into proteins.
17.
Plants and animals cannot use nitrogen directly from the air.
a)
True
b)
False
18.
Which is the opposite of condensation?
a)
runoff
b)
evaporation
c)
precipitation
d)
transpiration
19.
Snow, sleet, hail, and rain are all examples of  ________________. 
a)
evaporation
b)
condensation
c)
accumulation
d)
precipitation
20.
Which of the following is NOT a process of carbon for the carbon cycle?
a)
Diffusion 
b)
Combustion
c)
Decomposition 
d)
Atmosphere 
21.
Organisms use nitrogen to form
a)
carbohydrates and lipids
b)
proteins and lipids
c)
lipids and nucleic acids
d)
proteins and nucleic acids
22.
Animals obtain the nitrogen they need directly from the
a)
soil in their habitat
b)
air they breathe
c)
plants they eat
d)
bacteria living within them

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