Science crossword

3. the bending of a wave front as the wave passes between two substances in which the the speed of a wave differs.
5. the bouncing back of a ray of light,sound,or heat when the ray hits a surface that it does not go through.
7. waves that require a medium
10. the matter in which a wave travles.
11. waves that cause the particles in a medium to vibrate parallel to the direction of the wave motion.
13. the low points of a transverse wave.
14. the combination of two or more waves that result in a single wave.
15. the greatest distance that particles are displaced from their normal resting position.
16. waves in which the motion of the motion of particles in perpendicular tithe motion of the wave.

1. the distance from one crest to the next from one trough to the next.
2. The number of wavelengths that pass a point in a given time interval.
4. consists of changing electric and magnetic fields in space.
6. of one rise or fall of a swimmer in the ocean.
8. wave a pattern of vibrations that simulates a wave that is standing still.
9. the high points in a transverse wave.
12. a change in the direction of a wave when the wave finds an obstacle or an edge, such as an opening.