WorksheetsThe Carbon Cycle
Total questions: 12
Worksheet time: 50mins
The circulation of the element Carbon among Earth's atmosphere, land, oceans, and organisms is called _____________.
the Carbon Cycle
the Oxygen Cycle
the Carbon dioxide Cycle
the Water Cycle
The total amount of the carbon on Earth is constant.
True
False
Carbon is used in the process called __________ by plants and algae to make food and the building blocks for growth.
carbon cycle
life
photosynthesis
decomposition
How do animals get carbon?
By eating plants and or other animals.
They absorb it from the atmosphere.
From the ground
They do not get carbon from anywhere.
Carbon moves from fossil fuels to the atmosphere when fuels are burned.
True
False
How is the carbon cycle similar to the water cycle?
Both involve liquid substances falling to the Earth from the atmosphere?
Neither process works at low temperature.
Both involve the transfer of substances between animals, plants, and the Earth.
Both involve the transfer of substances between the earth and outer space.
What is a carbon sink?
Something that adds to the atmosphere.
Something that removes carbon from the atmosphere.
Something that adds carbon to the earth's crust.
Something that removes carbon from the earth's crust.
If the plant population decreased, the amount of carbon in the atmosphere would _________.
Stay the same
Increase
Decrease
Which is a true statement?
Humans depend on oxygen, plants depend on carbon dioxide
Plants produce carbon dioxide
Humans depend on carbon dioxide, plants depend on oxygen
Humans don't depend on plants for the air they need
