Across
- 1. colour pencils
- 5. when the sun sets
- 6. an everyday object used at night to light up rooms lightb___
- 9. has seven colours
- 12. which are thinner in the middle giving them a waist
- 14. same with optical
- 16. when light goes though the _____ the light will refrace
- 18. title
- 19. something that burns wood
Down
- 1. which are fatter in the middle
- 2. lenses only 3 words
- 3. incident ___
- 4. a colour white
- 7. when the sun rise
- 8. shines at night
- 10. colour of the rainbow indig_
- 11. bending of light
- 13. optical fibres
- 15. solar energy
- 17. something that shines with the moon