material that prevents electric current or heat from flowing

(a)  

a pathway that allows an electric current to flow freely

(a)  

a pathway that prevents electric current from flowing freely or stops the flow

(a)  

the flow of electricity through a circuit

(a)  

energy produced by the movement of electrons

(a)  

that which is needed to do work

(a)  

energy that can be sensed by the eye

(a)  

energy that causes a change in temperature

(a)  

energy produced by a machine or moving part

(a)  

energy that travels as waves through the air or water and vibrates the ear drum upon contact

(a)