Across
- 2. invisible 90degree line
- 3. shadow with sharp edges
- 5. colours of visible light
- 7. fading shadow
- 8. refraction is due to a difference in speed in the light
- 10. extended source of light, natural
- 11. 300 000 000 m/s (3 words)
- 12. wood is an ____ material.
- 13. air is a ____ medium
- 16. prism experimenter
- 17. eclipse that occurs at night.
- 19. type of reflection that scatters light
- 20. type of light that human eyes can see
- 21. when light slows down it bends ___ the normal.
Down
- 1. angle of ____ =angle of reflection
- 4. bouncing of light
- 6. frosted glass is ____.
- 9. SME (2 words)
- 13. ___ materials scatter some light
- 14. a __ is formed when light is shone on an opaque object
- 15. shows direction of a light ray
- 18. change in direction of light as it moves from one transparent medium to the other
- 19. splitting up of light