Bell Questions 1. A single vibratory disturbance that moves from point to point in a medium is called (1) a node 7. Periodic waves are produced by a wave (2) a periodic wave (3) an antinode generator at the rate of one wave every (4) a pulse 0.50 second. What is the period of the wave? 2. What generally occurs when a pulse reaches a 8. Which phrase best describes a periodic wave? boundary between two different media? (1) a single pulse traveling at constant speed (1) All of the pulse is reflected. 2) a single pulse traveling at varying speed (2) All of the pulse is absorbed. in the same medium (3) All of the pulse is transmitted. (3) a series of pulses at irregular intervals (4) Part of the pulse is reflected, part is (4) a series of pulses at regular intervals absorbed, and part is transmitted. 9. In the diagram below, the solid line represents a 3. A tuning fork vibrating in air produces sound wave generated in a rope. waves. These waves are best classified as (1) transverse, because the air molecules are vibrating parallel to the direction of wave motion (2) transverse, because the air molecules are As the wave moves to the right, point P on the vibrating perpendicular to the direction of rope is moving towards which position? wave motion (1) A ( 2 ) B (3) C ( 4) D (3) longitudinal, because the air molecules are 10. In the diagram below, a transverse wave is mov- vibrating parallel to the direction of wave ing to the right on a rope. motion (4) longitudinal, because the air molecules are vibrating perpendicular to the direction of wave motion Rope 4. When a transverse wave moves through a medium, what is the action of the particles of the medium? In which direction will segment x move as the (1) They travel through the medium with the wave passes through it? wave . (2) They vibrate in a direction parallel to the (1) down, only direction in which the wave is moving. (2) up, only (3) They vibrate in a direction perpendicular to (3) down, then up, then down the direction in which the wave is moving. (4) up, then down, then up (4) They remain at rest. 11. Which wave characteristic is defined as the number of cycles of a periodic wave 5. Compression waves in a spring are an occurring per unit time? example of 12. If the frequency of a sound wave is 440. cycles (1) longitudinal waves per second, the period of the wave is (2) transverse waves (3) 1.33 s (3) elliptical waves (1) 2.27 X 10-3 s (4) torsional waves (2) 0.752 s (4) 3.31 X 102 s 13. If the frequency of a sound wave is doubled, 6. Wave motion in a medium transfers the period of the sound wave is (1) energy only (1) halved (3) unchanged (2) mass only (2) doubled (4) quadrupled (3) both energy and mass (4) neither energy nor mass Topic 5: Waves 15Base your answers to questions 31 through 34 on the information and diagram below. A periodic wave, having a frequency of 40. hertz, travels to the right in a uniform medium as shown. Wave motion 3.0 m 31. On the diagram, draw one or more arrows to indicate the direction of motion of point A in the next instant of time. 32. On the diagram, label a point P that is in phase with point A. 33. Calculate the speed of the wave. 34. Calculate the period of the wave. Base your answers to questions 35 and 36 on the information below. The elapsed time between successive crests of a transverse wave passing a given point is 0.080 second. 35. Determine the period of the wave. 36. Calculate the frequency of the wave.20. An 8.0-meter long ocean wave passes the end of a dock every 5.0 seconds. Calculate the speed of Base yo the inf 14. The diagram below represents a transverse the wave. wave. 21. A sound wave travels at 340 meters per second A peri Determine how far from the source the waya travel has traveled after 0.50 second. 22. The diagram below represents a wave traveling in a uniform medium. The amplitude of the wave is represented by the distance between points 31 . (1) A and B (3) A and D 2) A and C 4) D and E 15. If the frequency of a sound wave in air at STP 32 remains constant, the wave's energy can be varied by changing its 33 (1) amplitude (3) wavelength Which characteristic of the wave is constant? (2) speed (4) period (1) amplitude (3) period 34 16. The diagram below shows a transverse wave. (2) frequency (4) wavelength Base your answers to questions 23 through 25 on the diagram below, which represents four transverse waves in the same medium. Which two points on the wave are in phase? (1) A and E (3) C and E (2) B and F (4) D and F 17. The diagram below shows a transverse wave. 23. Which two waves have the same amplitude? 24. Which two waves have the same wavelength? 25. Which two waves have the same frequency? Which point on the wave is 180 out of phase with point P? 26. A wave has a frequency of 2.0 hertz and a speed of 3.0 meters per second. The distance covered 18. The diagram that follows shows a train of waves by the wave in 5.0 seconds is moving along a string. (1) 30. m (2) 15 m (3) 7.5 m (4) 6.0 m 27. A wave traveling at 5.00 X 104 meters per second has a wavelength of 2.50 x 10' meters. What is the frequency of the wave? (1) 5.00 X 10-4 Hz (3) 5.00 X 103 Hz What is the wavelength? (2) 2.00 X 103 Hz (4) 1.25 X 10 Hz 19. The wavelength of the periodic wave shown in 28. Sound waves with constant frequency of the diagram below is 4.0 meters. 250 hertz are traveling through air at STP. Calculate the wavelength of the sound waves. 29. Calculate the total distance a sound wave travels in air at STP in 3.00 seconds. What is the distance from point B to point C? 154 Topic 5: Waves 30. What type of wave is sound traveling in water