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WorksheetsWater and Carbon Cycle
Total questions: 10
Worksheet time: 2hrs 38mins
Name
Class
Date
1.
How much salt water covers the earth?
a)
55%
b)
65%
c)
97.5%
d)
85%
2.
The changes to water when it cycles the earth is called
a)
the moon cycle
b)
the sun cycle
c)
the water cycle
d)
the wind cycle
3.
What is it called when plants give off water vapor as a waste product?
a)
condensation
b)
evaporation
c)
sublimation
d)
transpiration
4.
Which stages does liquid water from the ocean turn into water vapor?
a)
condesantion
b)
evaporation
c)
precipitation
d)
run off
5.
oxygen is a gas produced by _ and used by _
a)
plants and animals
b)
photosynthesis and carbon dioxide
c)
animals and plants
d)
carbon dioxide and photosynthesis
6.
if there is a fire in a forest, there will be less _ in the environment?
a)
nitrogen
b)
oxygen
7.
All of the carbon in existence is continually recycled in the carbon cycle
a)
True
b)
False
8.
How is the burning of fossil fuels related to global warming?
a)
Magic
b)
Fuels are hot
c)
Greenhouse effect
d)
Photosynthesis
9.
Which of the following removes carbon from the atmosphere?
a)
Combustion
b)
Respiration
c)
Photosynthesis
d)
Death
10.
If the plant population decreased, the amount of carbon in the atmosphere would _________.
a)
Stay the same
b)
Increase
c)
Decrease
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