Question detail
Which of the following is a reason that solar and wind energy are considered intermittent compared with coal?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
National and global energy resources
Question
- A. They produce more heat than coal
- B. They are cheaper to install
- C. Their output is variable and not always available
- D. They emit more greenhouse gases
Answer
Their output is variable and not always available
Explanation
The correct option is "Their output is variable and not always available". Their output is variable and not always available is right because it directly matches Energy resources: Explain why some energy resources are intermittent.. The other options are less suitable because they change the required Physics relationship, confuse the relevant energy store or use a distractor that does not answer the question.
Common mistake
Misunderstanding Intermittent Energy Resources
Students often confuse intermittent energy resources with non-renewable resources, thinking they are the same.
Clarify that intermittent energy resources, like solar and wind, are renewable but depend on environmental conditions, while non-renewable resources, like fossil fuels, are finite.
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