Question

How can heat cause motion in a liquid?

Answer 1

when heat is added to a substance,the molecules and atoms vibrate faster,the space between atoms increases. The motion and spacing of the particles determine the state of matter of the substance .

solid,liquid and gases all expand when heat added.

Answer 2

Hey mate!

the answer is here

when heat is added to substance the molecules and atoms vibrate faster. as atom move faster the space between atom increase. the motion and of the particle determines the state of matter substance the end result of increase molecular motion is that object expand up and take More space

hope it will help you and thanks for asking this question...