Question detail
Why is melting and recasting an effective method for recycling metals?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Life cycle assessment and recycling
Question
- A. It requires no energy.
- B. It allows for the creation of new metal products.
- C. It is cheaper than mining.
- D. It eliminates all waste.
Answer
The correct option is It allows for the creation of new metal products.. This answer is correct because it matches the approved learning objective to describe how metals can be recycled by melting and recasting or reforming in the subtopic Ways of reducing the use of resources.
Explanation
The correct option is It allows for the creation of new metal products.. It allows for the creation of new metal products. is correct because it directly supports the approved learning objective to describe how metals can be recycled by melting and recasting or reforming. This belongs to the subtopic Ways of reducing the use of resources within Life cycle assessment and recycling, 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 Ways of reducing the use of resources.
Common mistake
Misunderstanding Metal Recycling
Students often confuse the processes of melting and recasting metals with simply reusing them without processing.
Emphasize that recycling metals involves melting them down and reforming them into new products, rather than just reusing the same metal item.
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