What is the most likely reason that the red liquid inside of a thermometer moves up when it is heated?
The red liquid inside a thermometer typically moves up when it is heated because heat causes the molecules in the liquid to move around more quickly, causing them to spread out and take up more space. This increase in volume of the liquid causes it to expand and rise up the narrow tube of the thermometer.
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.