NEW
Font size
S
M
L
XL
WorksheetsBiogeochemical Cycles
Total questions: 25
Worksheet time: 13mins
Name
Class
Date
1.
Which is NOT a process of the water cycle?
a)
precipitation
b)
freezing
c)
transpiration
d)
evaporation
2.
The process of plants losing water through their leaves is called ____.
a)
condensation
b)
evaporation
c)
transpiration
d)
exhaling
3.
What is the most abundant gas in the atmosphere?
a)
hydrogen
b)
oxygen
c)
helium
d)
nitrogen
4.
Why do living things need nitrogen?
a)
To get energy
b)
To make amino acids
c)
To make proteins
d)
To make proteins AND amino acids
5.
Where are denitrifying bacteria found?
a)
In the soil
b)
Root nodules
c)
In dead things
d)
In the atmosphere
6.
What happens during the process of nitrogen-fixation?
a)
Nitrogen compounds turn into free nitrogen
b)
Free nitrogen turns into nitrogen compounds
7.
What happens during the process of denitrification?
a)
Nitrogen compounds turn into free nitrogen
b)
Free nitrogen turns into nitrogen compounds
8.
Which is NOT a way that nitrogen compounds are added to the soil?
a)
Decay of dead organisms
b)
Denitrification
c)
Animal waste
d)
Nitrogen-fixation
9.
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
10.
What 2 things does a plant make during photosynthesis?
a)
oxygen, glucose
b)
glucose, carbon dioxide
c)
useable energy, glucose
d)
oxygen, carbon dioxide
11.
What is this a picture of?
a)
Nitrogen cycle
b)
carbon cycle
c)
water cycle
d)
plant cycle
12.
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
13.
Respiration is the process by which ____________ is consumed and _______________ is produced.
a)
Carbon, Oxygen
b)
Oxygen, Carbon dioxide
c)
H20, oxygen
d)
Carbon, H2O
14.
A particular golf course is using large amounts of nitrogen fertilizer. What process could move this nitrogen into a local stream?
a)
volatilization
b)
nitrogen fixation
c)
runoff
d)
ammonification
15.
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
16.
What happens when organisms die and decay?
a)
Their nitrogen moves to the air as nitrogen gas
b)
Their nitrogen returns to the soil as ammonium
c)
Their nitrogen becomes tapped in clay and is unusable
d)
They stay on earth forever
17.
Combustion is another word for __________.
a)
Transportation
b)
Respiration
c)
Fossil Fuels
d)
Burning
18.
Water from rain or snow that flows over the surface of the land into streams, rivers, and lakes is called...
a)
accumulation
b)
runoff
c)
ground water
d)
surface water
19.
The process by which plants release water through the pores in their leaves is called...
a)
accumulation
b)
dormancy
c)
photosynthesis
d)
transpiration
20.
The transformation of water vapor back into liquid water by cooling is called...
a)
condensation
b)
evaporation
21.
Any form of water that falls from clouds and reaches Earth's surface as rain, snow, sleet, or hail is called...
a)
surface water
b)
precipitation
c)
ground water
d)
runoff
22.
Nitrogen rich fertilizers and manure can cause water pollution.
a)
True
b)
False
23.
The production of ammonia by bacteria during the decay of organic matter is
a)
Denitrification
b)
Ammonification
c)
Crazy
d)
Precipitation
24.
This is the conversion of nitrate to nitrogen gas, which is released back into the atmosphere.
a)
Nitrogen Fixation
b)
Evaporation
c)
Denitrification
25.
Nitrification is _________.
a)
production of nitrates from ammonia (NO3) for plants to use.
b)
conversion of nitrate to nitrogen gas, which is released back into the atmosphere.
c)
the condensing of water molecules.
Reset
