1. | Acoustic Variables include __________, __________, and __________ _________*3 Variables* |
A. |
B. |
C. |
D. |
2. | Ultrasound is a sound with a frequency greater than ________Hz |
3. | Sound travels fastest in? |
A. |
B. |
C. |
D. |
E. |
4. | If two media have different stiffness, the one with the higher stiffness will have the higher propagation speed. |
A. |
B. |
5. | A wave is a traveling variation in quantities called? |
6. | Period is the ______ that it takes for one cycle to occur. |
7. | Which of the following are Acoustic Variables? ***More than one correct answer*** |
A. |
B. |
C. |
D. |
E. |
8. | Sounds travels slowest in? |
A. |
B. |
9. | Wavelength in Soft Tissue _________ as Frequency Increases |
10. | Frequency is a measure of how many ______ an acoustic variable goes through in a second. |
11. | If Frequency in Soft Tissue is Doubled, Propagation Speed is _________.... |
12. | Wavelength is equal to _________ ________ divided by _________ |
13. | Propagation Speed Increases if ____________ is Increased. |
14. | Sound is a _____________wave *More than 1 correct answer* |
A. |
B. |
C. |
15. | Which of the following frequencies are in the Ultrasound Range? |
A. |
B. |
C. |
D. |
E. |
16. | Propagation Speed is determined by |
A. |
B. |
C. |
D. |
E. |
17. | Propagation Speed is the speed with which a ________ moves through a medium in 1 second. |
18. | The _________ and_________ of a medium determine Propagation Speed |
19. | Wavelength is the length of ______ over which one cycle occurs |
20. | Sound is a traveling variation in quantities called? |
21. | The average Propagation Speed in soft tissues is ? |
A. |
B. |
C. |
D. |
22. | The wavelength of 7-MHz ultrasound in soft tissue is __________mm |
23. | Solids have higher propagation speeds than liquids because they have greater |
A. |
B. |
24. | The unit of frequency is ______, which is abbreviated________ |
25. | Period decreases as ____________ increases. |
26. | From given values for propagation speed and frequency, which of the following can be calculated? |
A. |
B. |
C. |
D. |
E. |
27. | It takes ________us for ultrasound to travel 1.54cm in Soft Tissue |
28. | If Wavelength is 2mm and the frequency is Doubled the Wavelength becomes__________mm |
29. | Propagation Speed in Bone is ______ than in Soft Tissue. |