Across
- 2. light bumps into tiny particles of matter and spreads out in all directions
- 5. anything that has mass and takes up space
- 8. physical representation of something
- 10. Mirror appears reflective & transparent as a result of half-silvering
- 12. ability to see things far away, but not up close
- 13. matter transmits light without scattering it
- 15. light reflects on a smooth surface at a definite angle
- 16. controls how much light enters the eye
- 17. light reflects on a rough surfaces in all directions
- 18. form of energy that moves in straight lines as particles & waves
Down
- 1. material composed of carbon nanotubes that absorbs more than 99.96% of light
- 3. light transfers its energy to matter
- 4. responsible for focusing light entering the eye
- 6. ability to see things up close, but not far away
- 7. light bounces back from a surface
- 9. light changes speed & direction as it passes through matter
- 11. light passes through matter
- 13. matter transmits light, but scatters the light as it passes through
- 14. matter does not let any light pass through it