Question detail
Which of the following actions is NOT likely to improve energy efficiency?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Carbon dioxide and methane as greenhouse gases
Question
- A. Insulating buildings
- B. Using energy-efficient appliances
- C. Regularly servicing heating systems
- D. Increasing the use of coal for energy
Answer
The correct option is Increasing the use of coal for energy. This answer is correct because it matches the approved learning objective to describe how improving energy efficiency can reduce carbon footprints in the subtopic The carbon footprint and its reduction.
Explanation
The correct option is Increasing the use of coal for energy. Increasing the use of coal for energy is correct because it directly supports the approved learning objective to describe how improving energy efficiency can reduce carbon footprints. This belongs to the subtopic The carbon footprint and its reduction within Carbon dioxide and methane as greenhouse gases, 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 The carbon footprint and its reduction.
Common mistake
Misunderstanding Energy Efficiency
Students often confuse energy efficiency with energy conservation, thinking they are the same.
Clarify that energy efficiency refers to using less energy to provide the same service, while energy conservation involves reducing energy use altogether.
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