Question

which principle best explains how this thermometer works?
(1) A liquid changes to a gas when heated.
(2) A gas changes to a liquid when heated.
(3) A liquid expands when heated and contracts when cooled.
(4) A liquid contracts when heated and expands when cooled.

Answer 1

Answer:

The thermometer works on the principle of "zero'th law of Thermodynamics". This law states that if two bodies are in thermal equilibrium with another body, then they must also be in thermal equilibrium with each other

Explanation:

i belive its (3)