Across
- 4. Some light is able to travel through this material.
- 6. Hole in the centre of the iris that controls the amount of light that enters the eye.
- 8. Light travels to the material and is unable to travel any further.
- 9. Angle between the normal and the reflected ray.
- 13. Does not allow light to travel through.
Down
- 1. Imaginary flat surface that only has length and width, but no depth.
- 2. Light is able to travel through.
- 3. Sensory layer at the back of the eye.
- 5. Angle between the normal and the incident ray.
- 7. Light ray that is reflected by the reflective surface.
- 10. Imaginary line on a reflective surface that is perpendicular to the surface.
- 11. Protective front covering of the eye.
- 12. Light ray that travels to the reflective surface.
- 13. nerve Part of the eye that transmit information from the retina to the brain.