Question detail
When heating water in an electric kettle, what happens to the energy stores?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Energy changes in a system, and the ways energy is stored before and after such changes
Question
- A. Energy is transferred from the electrical energy store to the thermal energy store of the water
- B. Energy is transferred from the thermal energy store of the kettle to the water
- C. Energy is lost to the surroundings as sound energy
- D. Energy is converted into kinetic energy of the kettle
Answer
Energy is transferred from the electrical energy store to the thermal energy store of the water
Explanation
The correct option is "Energy is transferred from the electrical energy store to the thermal energy store of the water". Energy is transferred from the electrical energy store to the thermal energy store of the water is right because it directly matches Energy changes in systems: Required practical activity 1: determine the specific heat capacity of one or more materials.. 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 Specific Heat Capacity
Students often confuse specific heat capacity with thermal energy, 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 refers to the total energy within a system.
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