science

1. system that uses direction of sound waves to find underwarter objects
9. animal uses to locate an object by means of reflected sound
12. passage of light through an object
15. transfer of energy by a wave to the medium through which it travels
16. change of pitch when a sound source is moving in relation to an observer
18. amount of sound energy that passes through a square meter of space in one second
20. longitudinal waves that can only travel through matter

2. study of how sound interacts with structures
3. collection of reflected sounds from the surface in closed space
4. perception of high or low a sound seems
5. rapid back and forth motion that can occur in solids, liquids, or gases
6. region of a longitudinal wave where the particles are farthest apart
7. a wave that can only travel through matter
8. waves that overlap combine forming a new wave
10. bouncing of a wave off a surface
11. distance that transfers energy from one space to another without transferring matter
13. highest point on transverse wave
14. matter where a wave travels
17. reflected sound wave
19. lowest point on transverse wave