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

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

3. Consists of the ear canal

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

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

6. The number of complete cycles in a given time

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

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

9. Any motion that repeats at regular time intervals

10. The material through which a wave travels through

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

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

13. The frequency of a sound as you perceive it

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

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

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

17. Consists of the cochlea and the auditory nerve

18. Wavelength x frequency

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

20. A unit that compares the intensity of different sounds

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

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

23. The lowest point below the rest position

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

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

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

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

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

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

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

31. When two or more waves overlap or combine together

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

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

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

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