How does heat make a thermometer display highest temperature

When heat rises, the liquid expands from a bowl or bulb into the empty area, climbing up the tube. When the temperature falls, the liquid contracts and goes back down. Liquid thermometers often include both Celsius and Fahrenheit temperature scales, which are displayed on either side of the tube.

Explanation:

Brainliest please

b.a device that inputs heat into a cool object

that would be because of both gravity and friction. so     c