| A | B |
|---|
| heat energy | another name for radiant energy |
| radiant energy | another name for heat energy |
| absorbed | by clouds, the Earth's surface, and the ozone layer |
| reflected | by the atmosphere back into space |
| radiated | as heat at the Earth's surface |
| electromagnetic radiation | also called e/m radiation |
| gamma rays | most penetrating form of e/m energy |
| x rays | penetrates the skin and muscle, not bones |
| ultraviolet | causes sun tans and sun burns |
| infrared | same as heat |
| microwaves | cooks from the inside out |
| radar waves | second-least penetrating |
| radio waves | least penetrating form of e/m energy |
| visible light | also known as R.O.Y. G. B.I.V (the colors of the rainbow) |
| crest | top of a wave |
| trough | bottom of a wave |
| wavelength | distance from crest to crest or trough to trough |
| frequency | amount of crests that pass a point per second |
| conduction | heat transfer through direct contact |
| convection | heat transfer through a fluid |
| radiation | heat transfer through an empty space |
| vacuum | outer space/an empty space |
| fluid | a liquid or a gas |
| gas | with liquids, also called fluids |
| liquid | with gases, also called fluids |
| greenhouse effect | how the Earth keeps its heat |
| heat | also called infrared energy |
