Question

A thermometer is placed in water in order to measure the water’s temperature. What would cause the liquid in the thermometer to rise?
The molecules in the water move closer together.

The molecules in the thermometer’s liquid spread apart.

The kinetic energy of the water molecules decreases.

The kinetic energy of the thermometer’s liquid molecules decreases

Answer 1

I believe the correct answer from the choices listed above is the second option. It would be that the molecules in the thermometer’s liquid spread apart that caused the liquid in the thermometer to rise. The heat expanded the liquid inside. Hope this answers the question.

Answer 2

Answer: Option (b) is the correct answer.

Explanation:

When we use a thermometer to measure the temperature of water then heat from the water will lead to represent an increase in the thermometer reading.

This is because heat or warmth from the water will get transferred to the thermometer as a result, the liquid in the thermometer will also get warm.

Therefore, this warmth will increase kinetic energy of the molecules of liquid in the thermometer. Hence, the liquid will spread.

Thus, we can conclude that the liquid in the thermometer to rise because  molecules in the thermometer’s liquid spread apart.