Across
- 2. transfer of energy by a wave to the medium through which it travels
- 9. rapid back-and-forth motion that can occur in solids, liquids, or gases
- 10. passage of light through an object
- 12. reflected sound wave
- 14. describes a material through which light does not pass
- 15. bouncing of a wave off a surface
- 16. the study of how sound interacts with structures
- 19. type of cell in the retina of the eye that responds to colors
- 20. figure, picture, or representation of an object
Down
- 1. system that uses the reflection of sound waves to find underwater objects
- 3. wave changes direction, because its speed changes
- 4. material in which a mechanical wave travels
- 5. optical device that forms magnified images of very small, close objects
- 6. is thicker in the middle than at the edges
- 7. perception of how high or low a sound seems
- 8. electromagnetic radiation that you can see
- 11. number of wavelengths that pass by a point each second
- 13. a longitudinal wave that can only travel through matter
- 17. highest point on a transverse wave
- 18. ability to cause change