What is the main way in which heat transfer occurs in liquids and gases? HELP NEEDED!!!!!

Question

A. Through electromagnetic waves

B. Through sound waves

C. Through particles that bump into each other

D. Through particles that move past each other

Answer 1

It would be through particles that move past each other, because liquids and gases transfer heat more efficiently by convection than conduction, and D. best describes convection, which is when segments of the medium carry heat as they move from one part of the medium to the other (they convey heat, hence "convection").

 

This happens more readily in liquids and gases, as you can imagine, because solid material generally don't have parts continually break off and move to other places in the material.  Solid materials transfer heat from molecule to neighboring molecules, without any individual molecules typically moving about.  That is conduction.

Answer 2

Heat is generated as a result of friction, when particles come into contact.  Therefore, heat is transferred through particles bumping into each other.