WorksheetsBiogeochemical Cycles for Environmental Science
Total questions: 32
Worksheet time: 25mins
Name
Class
Date
1.
What is this a picture of?
a)
Nitrogen cycle
b)
carbon cycle
c)
water cycle
d)
plant cycle
2.
How does carbon dioxide leave the atmosphere?
a)
Through transpiration
b)
Through photosynthesis
c)
Through factory emission
d)
Sunlight
3.
These gases, such as carbon dioxide, trap heat in the Earth's atmosphere causing global warming
a)
Global warming gases
b)
Hot House gases
c)
Green House gases
d)
Thermal pollution
4.
Respiration is the process by which ____________ is consumed and _______________ is produced.
a)
Carbon, Oxygen
b)
Oxygen, Carbon dioxide
c)
H20, oxygen
d)
Carbon, H2O
5.
Organisms use nitrogen to form
a)
carbohydrates and lipids
b)
proteins and lipids
c)
lipids and nucleic acids
d)
proteins and nucleic acids
6.
Which of the following statements about the nitrogen cycle is not true?
a)
Animals get nitrogen by eating plants or other animals
b)
Plants generate nitrogen in their roots
c)
Nitrogen moves back and forth between the atmosphere and lving things
d)
Decomposers break down waste to yield ammonia
7.
Wastes such as dead leaves, scat (poop) and dead organisms that contain nitrogen are broken down by decomposers into
a)
NH4+
b)
N2
c)
NO3
d)
NO2
8.
How much of the atmosphere is composed of nitrogen gas?
a)
87%
b)
38%
c)
78%
d)
21%
9.
How do plants get the nitrogen they need?
a)
from the air
b)
from the soil or water in which they live
c)
from the Sun
d)
from broken-down rocks
10.
How are burning of fossil fuels and volcanic eruptions similar with respect to their effects on the carbon cycle?
a)
Both remove carbon from the atmosphere.
b)
Both add carbon to the atmosphere.
c)
Both add carbon to the lithosphere.
d)
Both remove carbon from the lithosphere.
11.
In what process is Carbon turned transformed into chemical energy?
a)
Photosynthesis
b)
Respiration
c)
Primary Production
d)
Secondary Production
12.
Phosphorous is passed from plants to ____ who eat them
a)
plants
b)
animals
c)
scavengers
13.
_____ brings phosphorous into our waterways. .
a)
precipitation
b)
runoff
c)
transpiration
d)
condensation
14.
What cycle is demonstrated in the diagram?
a)
TheLlife cycle
b)
The Water cycle
c)
The Carbon cycle
d)
The Nitrogen cyckle
15.
Identify the cycle pictured.
a)
The Water cycle
b)
The Carbon cycle
c)
The Nitrogen cycle
d)
This is not a correct diagram of any cycle.
16.
Identify the cycle picture.
a)
The Water cycle
b)
The Carbon cycle
c)
The Nitrogen cycle
d)
This is not a correct diagram of any cycle.
17.
Soil contains very little ___________, so farmers and gardeners must use fertilizer to promote plant growth.
a)
Oxygen
b)
Carbon
c)
Phosphorus
d)
Nitrogen
18.
Biogeochemical cycles:
a)
only include processes conducted by or within living organisms
b)
Pertain only to the abiotic environment
c)
describe the movement of water and other materials through the abiotic and biotic environment.
d)
Only pertain to exchanges and interactions that occur within the atmosphere
19.
The water cycle is also known as ..........
a)
Hypertonic Solution
b)
Hydrological Cycle
c)
Hyperlogical Cycle
d)
None of these
20.
Which of the following causes harmful algal blooms that result in dead zones in the ocean?
a)
Runoff of nitrogen and phosphorus-rich fertilizers
b)
Burning of fossil fuels
c)
Increased amounts of acidic precipitation
d)
Increased levels of greenhouse gases
21.
What is B?
a)
Evaporation
b)
Condensation
c)
Precipitation
d)
Runoff
22.
What is C?
a)
Evaporation
b)
Condensation
c)
Precipitation
d)
Runoff
23.
What is D?
a)
Evaporation
b)
Condensation
c)
Precipitation
d)
Runoff
24.
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.
25.
Where does nitrogen move?
a)
In human bodies
b)
In buildings
c)
Between animals, bacteria, plants, and the atmosphere.
d)
only in the air
26.
Nitrogen fixation is carried out primarily by
a)
humans
b)
plants
c)
bacteria
d)
consumers
27.
The Process of absorbing usable nitrogen into plants for various uses like photosynthesis, DNA, and protein synthesis.
a)
Denitrification
b)
Nitrofication
c)
Nitrogen Fixing Bacteria
d)
Assimilation
28.
The major reservoir or “sink” for carbon is
a)
CO2 in the atmosphere
b)
Granite bedrock
c)
The deep ocean sediment and limestone rock made of calcium carbonate.
d)
Aerobic and anaerobic bacteria.
29.
What role do decomposers play in the phosphorous cycle?
a)
absorb phosphorous
b)
release phosphorous into atmosphere
c)
return phosphorous into the soil
d)
combustion
30.
This is released by the weathering of rocks.
a)
Carbon
b)
Oxygen
c)
Phosphorus
d)
Nitrogen
31.
Most of the nitrogen (N2) is taken up from the atmosphere by...
a)
soil bacteria
b)
trees and flowering plants
c)
humans
d)
algae
32.
Identify the cycle pictured.
a)
The Water cycle
b)
The Carbon cycle
c)
The Nitrogen cycle
d)
The Phosphorus cycle.
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