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WorksheetsExploring the Carbon Cycle
Total questions: 13
Worksheet time: 7mins
Which of the following is considered a major carbon reservoir on Earth?
The Moon
The atmosphere
The Sun
The ozone layer
What is the process by which plants take in carbon dioxide from the atmosphere?
Respiration
Photosynthesis
Combustion
Decomposition
Which human activity is a major contributor to increased carbon dioxide in the atmosphere?
Planting trees
Burning fossil fuels
Drinking water
Photosynthesis
What is the main form of carbon found in the atmosphere?
Carbon monoxide
Carbon dioxide
Methane
Glucose
Which process moves carbon from the biosphere to the atmosphere?
Photosynthesis
Respiration
Weathering
Sedimentation
How does carbon enter the hydrosphere from the atmosphere?
Through volcanic eruptions
By dissolving in ocean water
Through plant roots
By animal respiration
Which of the following best describes the role of plants in the carbon cycle?
They release carbon dioxide during photosynthesis
They absorb carbon dioxide and convert it into organic matter
They store carbon in the geosphere
They increase atmospheric carbon by burning
What happens to carbon when animals die and decompose?
It is destroyed
It is released back into the atmosphere or soil
It turns into water
It becomes oxygen
Which pathway describes the movement of carbon from the geosphere to the atmosphere?
Photosynthesis
Combustion of fossil fuels
Dissolving in water
Respiration
A factory releases large amounts of carbon dioxide into the atmosphere. Predict one possible effect this could have on the carbon cycle.
Decrease in atmospheric carbon dioxide
Increase in atmospheric carbon dioxide
No change in carbon reservoirs
Decrease in geosphere carbon
Explain how deforestation can disrupt the carbon cycle.
It increases the number of plants absorbing carbon dioxide
It reduces the number of plants that absorb carbon dioxide, increasing atmospheric carbon
It has no effect on the carbon cycle
It increases carbon storage in the biosphere
A scientist measures the amount of carbon in the hydrosphere and finds it has increased over the past decade. What could be a possible explanation for this observation?
Decreased atmospheric carbon dioxide
Increased absorption of atmospheric carbon dioxide by oceans
Increased photosynthesis by plants
Decreased fossil fuel use
What element is being cycled here
Nitrogen
Water
Carbon
Calcium
