Question

Which of the following is the best description of conduction?

A.
the process of changing from a gas to a liquid or from a liquid to a gas

B.
the emission of energy in the form of rays or waves that can travel through empty space

C.
the transmission of heat through a medium without the motion of the medium

D.
heat transfer in a gas or liquid by the circulation of currents from one region to another

Answer 1

C. the transmission of heat through a medium without the motion of the medium

Step-by-step explanation:

Conduction occurs in the three states of matter namely : solid, liquid and gas. Heat is meant to flow from a hotter surface to a cold surface and it takes place by direct contact of the two surfaces.

Objects with high temperature usually have high movement and vibration and these movements and vibration propagates the heat energy to the surrounding molecules. This form of heat propagation ensures there is no motion of the heat medium.

Answer 2

Conduction is heat 'passed' through contact, without movement or loss of kinetic energy from the system (generally). So, the answer is C.