Across
- 3. ultrasound is reflected by _____ between soft tissue or bone
- 4. _____ is called as breaking sound barrier
- 8. ship have _____ that produce ultrasound
- 10. _____ is one of skydiver that travel faster than Mach 1
- 11. you will see the light of thunderstorm before the sound because it takes time for the sound to travel from the storm _____ to your ears
- 16. echo is _____ reflection of sound waves
- 17. distinctive sound that instrument make
- 18. example of a string instruments
- 19. starting pistols have electronic signal that connected to a microphone that ______ signal to loudspeakers
- 20. loudspeakers are more important in _____ races
Down
- 1. we see the fetus by taking _____
- 2. echoes can be _____ in concert halls
- 5. echolocation is used by dolphin when dolphin make a series of _____
- 6. the return of echo in ship are detected by _____
- 7. _____ walls are covered by soft materials
- 9. _____ is a process of muddying sound
- 12. waves can be produced when there is a box _____ the string
- 13. rope with weight in the end called _____
- 14. _____ reflects fetus and transmits ultrasound
- 15. when there is echo,sound _____ surfaces