Science Crossword

3. transparent object with at least one curved side that causes light to change direction
8. region of a longitudinal wave where the particles in the medium are closest together
10. lowest point on a transverse wave
11. wave travels only through matter
13. reflected sound wave
14. bouncing off a wave off a surface
15. figure, picture, or representation of an object
17. transfer of energy by a wave to the medium through which it travels
18. describes a material that allows most of the light that strikes it to pass through, forming a blurry image

1. amount of sound energy that passes through a square meter of space in one second
2. wave can travel through empty space and through matter
4. any instrument or object used to produce or control light
5. highest point on a transverse wave
6. number of waves that pass by a point each second
7. process an animal uses to locate an object by means of reflected sounds
9. region of a longitudinal wave where the particles are farthest apart
11. material in which a wave travels
12. wave disturbance is perpendicular to the direction of the wave
16. perception of how high or low a sound seems
17. maximum distance the particles in a medium move from their rest positions as a longitudinal wave passes through the medium