Across
- 2. 'The highest point of a wave'
- 3. 'The lowest point of a wave'
- 6. 'The height of a wave from its equilibrium position'
- 8. 'The light-sensitive part of the eye'
- 9. 'A disturbance that travels through a medium and transports energy'
- 10. 'A wave where the disturbance moves perpendicular to the wave direction'
- 12. 'A lens or mirror that curves outward'
- 13. 'The bouncing back of light from a surface'
- 15. 'A wave where the disturbance moves in the same direction as the wave'
- 17. 'Eye cells that detect light but not color'
- 18. 'The distance between two consecutive crests or troughs'
Down
- 1. 'An electromagnetic wave that allows us to see'
- 2. 'A lens or mirror that curves inward'
- 4. 'The nerve that carries signals from the eye to the brain'
- 5. 'The substance through which a wave travels'
- 7. 'A transparent object that refracts and disperses light'
- 8. 'The bending of light when it changes medium'
- 11. 'The number of waves that pass a point in one second'
- 14. 'Eye cells that detect color'
- 16. 'A transparent optical device that refracts light'