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

2. A unit that compares the intensity of different sounds

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

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

5. The material through which a wave travels through

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

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

8. The lowest point below the rest position

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

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

11. The frequency of a sound as you perceive it

12. The number of complete cycles in a given time

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

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

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

16. Any motion that repeats at regular time intervals

17. Consists of the ear canal

18. When two or more waves overlap or combine together

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

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

21. Consists of the cochlea and the auditory nerve

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

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

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

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

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

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

28. Wavelength x frequency

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

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

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

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

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

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

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