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The carbon cycle

9th grade (Year 10 in England) · 16 questions · Common Core: NGSS.HS-LS2-5, NGSS.MS-LS2-3 · England: KS3 Chemistry: Earth and atmosphere, KS4 Combined Science: Ecosystems

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1
Question 1
What role do microorganisms play in the carbon cycle?
- A. They photosynthesise in the dark
- B. They have no role
- C. They turn carbon into oxygen
- D. They decompose dead organisms, releasing carbon dioxide by respiration
2
Question 2
Does this process remove carbon dioxide from the air or add it: burning fossil fuels?
- A. removes CO₂ from the air
- B. adds CO₂ to the air
3
Question 3
Which process adds carbon dioxide to the air?
- A. carbon dioxide dissolving in the sea
- B. photosynthesis
- C. volcanic eruptions
- D. algae growing in the ocean
4
Question 4
How does carbon pass from a plant into an animal?
- A. The animal breathes in the plant
- B. The animal eats the plant
- C. The plant photosynthesises inside the animal
- D. Through the soil only
5
Question 5
Does this process remove carbon dioxide from the air or add it: trees growing?
- A. removes CO₂ from the air
- B. adds CO₂ to the air
6
Question 6
Which process removes carbon dioxide from the air?
- A. respiration
- B. volcanic eruptions
- C. trees growing
- D. burning forests
7
Question 7
How does carbon pass from a plant into an animal?
- A. The animal eats the plant
- B. Through the soil only
- C. The animal breathes in the plant
- D. The plant photosynthesises inside the animal
8
Question 8
Does this process remove carbon dioxide from the air or add it: decomposition by microorganisms?
- A. removes CO₂ from the air
- B. adds CO₂ to the air
9
Question 9
Which process removes carbon dioxide from the air?
- A. volcanic eruptions
- B. burning fossil fuels
- C. burning forests
- D. carbon dioxide dissolving in the sea
10
Question 10
How does carbon pass from a plant into an animal?
- A. The animal breathes in the plant
- B. Through the soil only
- C. The plant photosynthesises inside the animal
- D. The animal eats the plant
11
Question 11
Does this process remove carbon dioxide from the air or add it: respiration?
- A. removes CO₂ from the air
- B. adds CO₂ to the air
12
Question 12
Which process removes carbon dioxide from the air?
- A. decomposition by microorganisms
- B. photosynthesis
- C. burning forests
- D. respiration
13
Question 13
What role do microorganisms play in the carbon cycle?
- A. They photosynthesise in the dark
- B. They turn carbon into oxygen
- C. They have no role
- D. They decompose dead organisms, releasing carbon dioxide by respiration
14
Question 14
Does this process remove carbon dioxide from the air or add it: respiration?
- A. removes CO₂ from the air
- B. adds CO₂ to the air
15
Question 15
Which process removes carbon dioxide from the air?
- A. carbon dioxide dissolving in the sea
- B. burning forests
- C. burning fossil fuels
- D. volcanic eruptions
16
Question 16
How did fossil fuels such as coal form?
- A. from volcanoes erupting last century
- B. from melted rock
- C. from the remains of ancient plants buried and compressed over millions of years
- D. from seawater evaporating

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