Time

1. What is the reciprocal of 5?*

2. What describes the behavior of a sound wave as it travels through a medium?*

3. How is a person’s weight related to the amount of time they spend exercising?*

4. A longitudinal wave travels east to west. In which direction do its particles move?*

5. What is the range of frequencies emitted by diagnostic ultrasound transducers?*

6. Which axis on a graph runs horizontally?*

7. What term describes the number of cycles an acoustic variable completes in one second?*

8. A bag contains six pounds of flour. If the amount increases by a factor of five, how much flour is there?*

9. What prefix represents one-billionth?*

10. When two waves combine at the same location, what is that process called?*

11. Which axis of a graph runs vertically?*

12. What is the reciprocal of 1/10?*

13. A force is applied to a surface. If both the force and the area are tripled, what happens to the pressure?*

14. Which of the following describes the characteristics of a sound wave?*

15. How are temperature and ice-cream sales related?*

16. Which of the following is not a unit of frequency?*

17. What prefix represents a million?*

18. In a transverse wave, if a particle moves vertically, which direction does the wave travel?*

19. Which of the following best lists metric prefixes in increasing order?*

20. How much larger is one billion than one?*

21. What type of wave has particle motion perpendicular to its direction of travel?*

22. When a sonographer increases imaging depth, what happens to frequency?*

23. What is the circumference of a circle measured in?*

24. How can the volume of an irregularly shaped object be measured accurately?*

25. Which of the following are units of pressure for an acoustic wave? (select all that apply)*

26. What determines the period of an ultrasound wave?*

27. A bouquet originally has 30 flowers. The amount is decreased by a factor of 3. How many flowers remain?*

28. Which prefix means one-billionth?*

29. What is the volume of a cystic structure measured in?*

30. What is the range of periods commonly found in ultrasound imaging?*

31. What is a logarithmic scale?*

32. What determines how much sound is reflected at a boundary?*

33. What happens when the angle of incidence equals the angle of reflection?*

34. What happens when sound passes from one medium to another with a different speed?*

35. What is acoustic impedance?*

36. What are the units of acoustic impedance?*

37. What type of reflection occurs from rough or uneven surfaces?*

38. What property of tissue mainly determines the speed of sound?*

39. What is the average speed of sound in soft tissue?*

40. Which tissue has the fastest speed of sound?*

41. Which tissue has the slowest speed of sound?*

42. What part of the sound wave corresponds to the maximum strength of compression?*

43. What does amplitude represent in an ultrasound wave?*

44. If frequency doubles, what happens to the period?*

45. What is the relationship between frequency and period?*

46. What does a transducer convert?*

47. What is the backing (damping) material in a transducer used for?*

48. What determines axial resolution?*

49. How can axial resolution be improved?*

50. What determines lateral resolution?*