| A | B |
|---|
| wavelengths and frequencies | electromagnetic waves travel at the speed of light in a vacuum, but have different |
| visible light | Wavelengths your eyes can see. |
| radio waves | Wavelengths your ears can detect (with a radio). |
| frequency increases | As the wavelength decreases |
| frequency decreases | As the wavelength increases, |
| the higher the energy | The higher the frequency of a wave, |
| less energy | Waves with the lowest frequencies have |
| electromagnetic spectrum | Electromagnetic waves placed in order from lowest frequency to highest frequency. |
| radio waves | waves with the longest wavelengths and lowest frequencies |
| gamma rays | waves with the shortest wavelengths and highest frequencies. |
| microwaves | These waves are used for cooking, radar, and cell phones. |
| infrared waves | These waves are used in heat lamps, electric stove burners, and are felt as heat. |
| thermogram | An image that shows areas of different temperatures in different colors. |
| refract | When light waves enter a new medium and bend, they |
