Question

Multiple Choice Question
What is the most likely reason that the red liquid inside of a thermometer moves up when it is heated?
A.
The particles in the red liquid move faster and come together.

B.
The particles in the red liquid move faster and spread apart.

C.
The particles in the red liquid move slower and come together.

D.
The particles in the red liquid move slower and spread apart.

Answer 1

The correct answer is:

B. The particles in the red liquid move faster and spread apart.

As the temperature increases, the particles in the liquid gain kinetic energy, causing them to move faster and spread apart, which leads to the liquid rising in the thermometer.