Light & Sound Waves

1. A light ray that passes from air into water will be refracted __________ the normal.
3. A change in frequency as an object moves towards or away from an observer is known as the __________ effect.
7. The bouncing back of a wave from a surface.
8. Imaginary line perpendicular to a reflective or refractive surface.
9. The pitch of a sound is determined by its ________.
10. The inside, back layer of the eyeball that is made of light receptors
13. Light rays passing through a concave lens will _____________ .
14. The distance between two consecutive crests or compressions.
15. The number of waves passing a point each second.
16. Light rays converge when they pass through this type of lens.

1. Light waves are an example of this type of wave.
2. Snail-like structure in your inner ear responsible for converting sound waves to electrical signals.
4. A wave that requires a medium to travel through.
5. The angle at which a light ray hits a surface is known as the angle of ___________ .
6. The bending of waves as they pass from one medium to another.
11. Changing this feature of a sound wave will alter the volume.
12. The unit of measurement for wave frequency.
15. Where light rays converge to one point.