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

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

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

5. Consists of the cochlea and the auditory nerve

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

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

8. The frequency of a sound as you perceive it

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

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

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

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

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

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

15. Any motion that repeats at regular time intervals

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

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

18. The material through which a wave travels through

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

20. When two or more waves overlap or combine together

21. Wavelength x frequency

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

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

24. Consists of the ear canal

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

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

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

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

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

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

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

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

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

34. The lowest point below the rest position

35. The number of complete cycles in a given time