| A | B |
| freeze | to change to a liquid |
| evaporate | to change from a liquid to a gas |
| consense | to change from a gas to a liquid |
| melt | to change from a solid to a liquid |
| radiation | the movement of heat energy in the form of waves |
| convection | the movement of heat through liquids to gases |
| insulator | a material that does not conduct beat well |
| conductor | a material that heat travels through easily |
| conduction | the movement of heat by direct contact |
| friction | a force that makes it hard for two objects to move past each other |
| temperature | a measure of how hot or cold something is |
| solar energy | the Sun's energy |
| opaque | materials that block light |
| heat | the energy of motion of the tiny particles |
| energy | the ability to cause a change in matter |
| energy of motion | the energy that moving matter has |
| stored energy | energy in matter that can cause that matter to move or change |