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Mechanical Waves And Sound

Subject : engineering
  • Answer 35 questions in 15 minutes.
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  • Match each statement with the correct term.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A unit that compares the intensity of different sounds

2. The number of complete cycles in a given time

3. The response of a standing wave to another wave of the same frequency

4. The material through which a wave travels through

5. Longitudinal waves - compressions and rarefactions that travel through a medium

6. A physical response to the intensity of sound - modified by physical factors

7. An area where the particles in a medium are spaced close together

8. When two or more waves combine to produce a wave with a larger displacement

9. Consists of the ear canal

10. A wave that appears to stay in one place - it does not seem to move through the medium

11. An area where the particles in a medium are spread out

12. Any motion that repeats at regular time intervals

13. The time required for one cycle - a complete motion that returns to its starting point

14. A disturbance in matter that carries energy from one place to another

15. The frequency of a sound as you perceive it

16. The lowest point below the rest position

17. A point where a crest or trough occurs midway between two nodes

18. Wavelength x frequency

19. When two or more waves combine to produce a wave with a smaller displacement

20. A wave in which the vibration of the medium is parallel to the direction the wave travels

21. A change in sound frequency caused by motion of the sound source - motion of the listener - or both

22. Consists of the eardrum - hammer - anvil - & stirrup

23. The rate at which a wave's energy flows through a given area

24. The bending of a wave as it moves around an obstacle or passes through a narrow opening

25. Is the maximum displacement of the medium from its rest position on a wave

26. The distance between a point on one wave and the same point on the next cycle of the wave

27. A wave that causes the medium to vibrate at right angles to the direction in which the wave travels

28. When a wave bounces off a surface that it cannot pass through

29. The bending of a wave as it enters a new medium at an angle

30. When two or more waves overlap or combine together

31. A wave that travels along a surface separating two media (more than one medium)

32. A point on a standing wave that has no displacement from the rest position

33. The highest point of the wave above the rest position

34. A technique used for determining the distance to an object underwater

35. Consists of the cochlea and the auditory nerve