Across
- 3. The incoming light ray
- 4. The point where reflected rays meet
- 5. The straight line through the centre of a mirror
- 9. Radiation that can cause sunburns
- 12. A mirror that curves outward
- 13. A line perpendicular to a mirror
- 17. Type of spectrum that includes visible light
- 20. A type of electromagnetic radiation related to heat
- 22. The part of the electromagnetic spectrum humans can see
- 24. The bouncing of light off a surface
- 25. A form of energy that travels in waves
- 26. Electromagnetic waves used to see bones
- 27. Number of waves passing a point each second
- 28. A model showing light travelling in straight lines
- 30. Distance between two wave crests
Down
- 1. A mirror that curves inward
- 2. Electromagnetic waves used to heat food
- 6. The bending of light between materials
- 7. Describes how much larger or smaller an image is
- 8. A flat reflective surface
- 10. Formed when light rays meet or appear to meet
- 11. A type of image that cannot be projected on a screen
- 14. Formed when white light separates into colours
- 15. Electromagnetic waves used for communication
- 16. An object that produces its own light
- 18. The range of colours in visible light
- 19. A type of image that can be projected on a screen
- 21. The outgoing light ray
- 23. Digits that show precision in measurements
- 29. An object that reflects light