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WorksheetsCarbon Cycle
Total questions: 14
Worksheet time: 7mins
What is carbon known as?
The element of water
The element of life
The element of fire
The element of air
Which of the following is a carbon compound?
H2O
CO2
NaCl
O2
What is one purpose of the carbon cycle?
Provides water and minerals
Provides air and energy
Provides light and sound
Provides heat and electricity
How does the carbon cycle help maintain the environment?
By creating new species
By maintaining a stable climate
By increasing pollution
By reducing biodiversity
What do animals contribute to the carbon cycle?
They absorb CO₂
They release CO₂
They produce oxygen
They decompose matter
What happens to CO₂ during photosynthesis?
It is released
It is absorbed
It is converted to nitrogen
It is turned into methane
Which of the following is NOT needed for photosynthesis?
Sunlight
Water
Soil
Carbon Dioxide
In the process of respiration, which gas is exchanged for oxygen in the lungs?
Nitrogen (N2)
Carbon dioxide (CO2)
Helium (He)
Methane (CH4)
In the carbon cycle, what happens during decomposition?
Carbon dioxide is absorbed by plants
Carbon is released from dead organisms
Carbon dioxide is converted into oxygen
Carbon is stored in fossil fuels
How does carbon dioxide enter the ocean in the carbon cycle?
Through photosynthesis
Through combustion
Water dissolves CO₂
Through respiration
What happens to carbon during photosynthesis in the carbon cycle?
It is released into the atmosphere
It is converted into oxygen
It is stored in fossil fuels
It is dissolved in water
Humans burn fossil fuels and wood, releasing carbon dioxide into the atmosphere. This carbon dioxide is then absorbed by trees for photosynthesis. These processes are contributory to which chemical cycle?
The carbon cycle
The water cycle
The nitrogen cycle
The phosphorous cycle
Carbon moves from fossil fuels to the atmosphere when fuels are burned.
True
False
