Question detail
Which equation represents the change in thermal energy?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Internal energy and energy transfers
Question
- A. E = m x c x delta theta
- B. E = m x L
- C. E = F x d
- D. E = P x t
Answer
The correct answer is E = m x c x delta theta.
Explanation
Comparison lens: State both sides of the comparison so the contrast is explicit rather than implied. This question asks: Which equation represents the change in thermal energy. The correct response is E = m x c x delta theta, because specific heat capacity links energy, mass, material and temperature change. In Temperature changes in a system and specific heat capacity, the marking point should connect directly to apply MS 3b and MS 3c skills when rearranging and calculating with the specific heat capacity equation. If the question includes values, the working must keep the appropriate unit and operation; if it is an explanation, it must name the relevant particle behaviour or energy change. This item belongs to Internal energy and energy transfers, so avoid answers that switch to a different quantity, confuse heat with temperature, or describe gas pressure without collisions when collisions are the reason. Checkpoint 353 is distinct because it uses this exact question context and the comparison lens rather than a generic particle-model sentence.
Common mistake
Confusing Specific Heat Capacity with Thermal Energy
Students often confuse specific heat capacity with the total thermal energy transferred, thinking they are the same concept.
Remember that specific heat capacity is the energy required to raise the temperature of one kilogram of a substance by one degree Celsius, while thermal energy is the total energy transferred in a process.
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