Exam-style question
Try this first
Describe how energy is transferred in a refrigerator and explain its operation.
Model answer
What a good answer should say
- A refrigerator transfers thermal energy from the inside to the outside environment.
- It absorbs heat from the food compartment and expels it outside using work done by the compressor, which circulates the refrigerant.
Explanation
Why this works
This answer effectively explains the energy transfer process in a refrigerator, detailing the roles of heat absorption and work input. It assesses the student's ability to connect thermodynamic concepts to real-world devices.
Common mistake
No common mistake is linked to this question yet.