Test your basic knowledge |

Mechanical Waves And Sound

Subject : engineering
Instructions:
  • Answer 35 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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






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






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






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






5. The lowest point below the rest position






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






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






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






9. The number of complete cycles in a given time






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






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






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






13. A unit that compares the intensity of different sounds






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






15. Any motion that repeats at regular time intervals






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






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






18. Wavelength x frequency






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






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






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






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






23. Consists of the cochlea and the auditory nerve






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






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






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






27. When two or more waves overlap or combine together






28. The material through which a wave travels through






29. Consists of the ear canal






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






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






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






33. The frequency of a sound as you perceive it






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






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