Across
- 1. Light intensity is how much light ______ through a given point
- 5. Different ______ reflect light in different degrees of intensity.
- 7. How we see is a reflection of that light ______ off an object
- 8. Only a few objects ______ give off light
- 9. Light can move in many different ______
- 11. The ______ of light rays as they pass from one material to the other
- 13. The distance between two high ______ in a light wave is known as the wavelength of light
- 14. Light travels at about 186,000 ______ per second through air
Down
- 1. ______ is a property of light that describes the direction of which light waves flow
- 2. Intensity in this case it is not how ______ the light is
- 3. When it reaches glass or water it ______ down
- 4. Light waves that move in only one direction only are said to be ______
- 6. A wave that is part of the ______ of electromagnetic radiation that we can see
- 10. Light passing through a welder’s mask has a low ______
- 12. A ________ mathematician and physicist that suggested that light was actually a wave