A piano is played by striking the keys. A shovel is used to move dirt from one place to another. A ball is thrown into the air. A stove is used to boil water in a pan.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: In which example could a thermometer be used to show that heat energy is being transferred?
Possibilities:
- A piano is played by striking the keys.
- A shovel is used to move dirt from one place to another.
- A ball is thrown into the air.
- A stove is used to boil water in a pan.

A stove is used to boil water in a pan.