The Carbon Cycle (Leaving Cert CASD): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does the carbon cycle describe?
What does the carbon cycle describe?
Movement of carbon between Earth's parts
Why is Earth considered a closed system for carbon?
Why is Earth considered a closed system for carbon?
No carbon arrives from or leaves Earth
Which is the largest store of carbon on Earth?
Which is the largest store of carbon on Earth?
Rocks and sediments
What role does photosynthesis play in the carbon cycle?
What role does photosynthesis play in the carbon cycle?
Plants absorb CO₂ and make compounds
What are carbon sinks?
What are carbon sinks?
Places where carbon is stored away
What percentage of human CO₂ emissions do oceans absorb?
What percentage of human CO₂ emissions do oceans absorb?
30%
How do fossil fuels affect the carbon cycle when burned?
How do fossil fuels affect the carbon cycle when burned?
They release stored CO₂ to atmosphere
What is CO₂'s role as a greenhouse gas?
What is CO₂'s role as a greenhouse gas?
It traps heat in Earth's atmosphere
How do respiration and decomposition affect carbon?
How do respiration and decomposition affect carbon?
They release CO₂ back to atmosphere
What % of carbon emissions do forests, grassland, and farms capture?
What % of carbon emissions do forests, grassland, and farms capture?
25%