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






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






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






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






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






6. Consists of the ear canal






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






8. A unit that compares the intensity of different sounds






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






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






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






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






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






14. The frequency of a sound as you perceive it






15. The material through which a wave travels through






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






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






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






19. Consists of the cochlea and the auditory nerve






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






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






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






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






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






25. The lowest point below the rest position






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






27. Wavelength x frequency






28. The number of complete cycles in a given time






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






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






31. When two or more waves overlap or combine together






32. Any motion that repeats at regular time intervals






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






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






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