Question detail
A student is asked to explain how a hydroelectric dam produces electricity. Which answer aligns with the curriculum requirement?
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. The dam uses turbines to convert water flow into mechanical energy, which then drives generators.
- B. The dam stores water in reservoirs and releases it to produce heat energy.
- C. The dam uses chemical reactions to generate electricity.
- D. The dam uses solar panels to convert sunlight into electricity.
Answer
The dam uses turbines to convert water flow into mechanical energy, which then drives generators.
Explanation
The correct option is "The dam uses turbines to convert water flow into mechanical energy, which then drives generators.". The dam uses turbines to convert water flow into mechanical energy, which then drives generators. is right because it directly matches Energy resources: Recognise that detailed descriptions of how resources generate electricity are not required for this topic.. 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 Electricity Generation
Students often think they need to know detailed processes of how each energy resource generates electricity.
Focus on the types of energy resources and their general uses rather than the specific mechanisms of electricity generation.
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