| Question | Answer |
| lowest frequency of light we can see | red |
| if light is not remitted it is absorbed and becomes ___ | warmer |
| light penetrates these types of objects | transparent |
| all emw travel at this speed | light |
| shortest wavelength of emw; high energy | gamma |
| light cannot penetrate these types of objects | opaque |
| of a emw the shorter the wavelenth the ___ the frequency | higher |
| long wavelentgh emw; low energy | radio waves |