Across
- 1. a bulging shape
- 5. the decreasing in size of the lit-up part of the Moon in its monthly cycle
- 7. the increasing in size of the lit-up part of the Moon in its monthly cycle
- 11. a device that uses mirrors for you to see things that are otherwise out of sight
- 12. reflection in a mirror (6,5)
- 14. to meet or come together
- 17. the ray of light that reflects off the mirror (9,3)
- 18. a line drawn at right angles (90°) to the surface of the mirror
- 19. the ray of light that arrives at the mirror (8,3)
Down
- 2. a time period of 24 hours (5,3)
- 3. a time period of 60 minutes (5,4)
- 4. the bending of light
- 6. the space between two lines that meet at a surface, measured in degrees
- 8. the changing shapes of the Moon in its monthly cycle
- 9. the point where rays of light converge (5,5)
- 10. a transparent material such as glass, Perspex or plastic with at least one curved surface
- 11. a flat mirror, rather than a mirror with a curved surface, such as a concave or convex mirror (5,6)
- 13. a time period of 365¼ days (5,4)
- 15. something our eyes see, but it is not real (7,8)
- 16. a material such as air, water or glass