Question detail
What type of rock is formed from the accumulation of carbonate sediments?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
The composition and evolution of the Earth's atmosphere
Question
- A. Igneous rock
- B. Metamorphic rock
- C. Sedimentary rock
- D. Volcanic rock
Answer
The correct option is Sedimentary rock. This answer is correct because it matches the approved learning objective to describe limestone, coal, crude oil and natural gas as long-term carbon stores in the subtopic How carbon dioxide decreased.
Explanation
The correct option is Sedimentary rock. Sedimentary rock is correct because it directly supports the approved learning objective to describe limestone, coal, crude oil and natural gas as long-term carbon stores. This belongs to the subtopic How carbon dioxide decreased within The composition and evolution of the Earth's atmosphere, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from How carbon dioxide decreased.
Common mistake
Misunderstanding Carbon Stores
Students often confuse limestone, coal, crude oil, and natural gas as being the same type of carbon store.
Clarify that limestone is a sedimentary rock, while coal, crude oil, and natural gas are fossil fuels formed from organic matter.
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