| Term | Definition |
|---|
| electromagnetic waves | a form of energy that can move through the vacuum of space |
| radiation | the direct transfer of energy by electromagnetic waves |
| visible light | includes all of the colors of the rainbow and each color is the result of different wavelengths |
| infrared radiation | electromagnetic waves with wavelengths that are longer than visible light but shorter than microwaves |
| ultraviolet radiation | electromagnetic waves with wavelengths that are shorter than visible light but longer than x-rays |
| scattering | reflection of light in all directions |
| greenhouse effect | the process by which heat is trapped in the atmosphere by gases that form a "blanket" around Earth |
| temperature | a measure of how hot or cold an object is compared to a reference point |
| thermometer | an instrument used to measure temperature |
| heat | the transfer of thermal energy from a hotter object to a cooler one |
| conduction | the direct traser of heat from one substance to another substance that it is touching |
| convection | the transfer of heat by the movement of a fluid |
| troposphere | the lowest layer of Earth's atmosphere |
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