Across
- 3. A crisp, defined shadow that is formed when an opaque object is very close to a surface and fully blocks the light source.
- 4. Along with green, it is the color that humans have evolved to see the best.
- 6. The speed of light is very fast, but it's not ________.
- 7. Mixing cyan and yellow paint together leaves you green paint because all the other colors are ___________.
- 13. The spectrum of radiation in which visible light is a part.
- 15. Mixing colors of paint is called color by ____________.
- 16. An opaque object ________ the color that it appears unless it's like 11 Down.
- 17. The type of radiation that is "below" the frequency we can see.
- 18. Blue light mixed with red light will look ________.
- 19. It's the only thing we see.
Down
- 1. When light reflects off a surface it becomes ___________ parallel to that surface.
- 2. Cyan light minus blue light equals ________ light.
- 5. Magenta plus green light = __________ light.
- 7. Mixing colors of light is called color by ___________.
- 8. The number of waves per second.
- 9. The sky appears blue because the atmosphere __________ off the higher frequencies of light.
- 10. The material in a substance that selectively absorbs certain colors is called ________.
- 11. An object that can absorb all colors would appear _________.
- 12. Sunsets are a mix of colors because the sunlight has more __________ to interact with the atmosphere.
- 14. You would need to wear sunblock on a cloudy day because clouds are ___________ to ultra violet light.