| A | B |
| energy | the ability to cause motion or create change |
| electrical energy | energy cauased by the movement of electricity |
| thermal energy | energy from heat |
| sound energy | energy of vibrations |
| kinetic energry | energy of motion |
| light energey | travels as waves; some comes from the sun |
| potential energy | energy that is stored |
| conduction | transfer of heat when one thing touches another |
| convection | transfer of thermal energy as matter moves |
| radiation | energy sent in waves; can tracel though empty space |
| friction | occurs when two surfaces rub together |