Across
- 4. eclipse when earth forms shadow on moon
- 6. shadow formed by an extended source only
- 7. light is a form of this
- 10. light bends when going to another medium
- 11. a collection of rays
- 12. allows all of the light to pass through it
- 14. object that gives out its own light
- 15. eclipse when moon forms shadow on earth
Down
- 1. reflection for light on smooth surface
- 2. type of beam where light meets at a point
- 3. shadow formed by a point source
- 5. when light bounces off an object
- 8. the path along which light travels
- 9. type of beam where light spreads out
- 13. where light is blocked by an opaque object