For 1st Wave Exam 1. Which wave diagram has both wavelength ( ) and amplitude (A) labeled correctly? A) B) C) 5. The energy of a sound wave is most closely related to the wave's A) frequency B) amplitude C) wavelength D) speed 6. As a transverse wave travels through a medium, the individual particles of the medium move A) perpendicular to the direction of wave travel B) parallel to the direction of wave travel C) in circles D) in ellipses 7. A transverse wave passes through a uniform material medium from left to right, as shown in the diagram below. D) 2. The diagram below shows two points, A and B, on a wave train. Which diagram best represents the direction of vibration of the particles of the medium? A) B) C) D) How many wavelengths separate point A and point B? A) 1.0 B) 1.5 C) 3.0 D) 0.75 3. Which is a unit of wavelength? A) cycles/second B) meters/second C) seconds D) meters/cycle 4. What is the wavelength of the wave shown in to diagram below? 8. The diagram below shows a transverse water wave moving in the direction shown by velocity vector v. A) 1 m B) 2 m C) 3 m D) 0.5 m At the instant shown, a cork at point P on the water's surface is moving toward A) A B) B C) C D) D
Base your answers to questions 9 through 11 on the information and diagram below. A longitudinal wave moves to the right through a uniform medium, as shown below. Point A, B, C, D, and E represent the positions of particles of the medium 9. The energy of this wave is related to its A) amplitude B) period C) speed D) wavelength 10. The wavelength of this wave is equal to the distance between points A) A and B B) A and C C) B and C D) B and E 11. Which diagram best represents the motion of the particle at position C as the wave moves to the right? A) B) C) D) 12. Which form(s) of energy can be transmitted through a vacuum? A) light, only B) sound, only C) both light and sound D) neither light nor sound 13. A physics student takes her pulse and determines that her heart beats periodically 60 times in 60 seconds. The period of her heartbeat is A) 1 Hz B) 60 Hz C) 1 s D) 60 s 14. While sitting in a boat, a fisherman observes that two complete waves pass by his position every 4 seconds. What is the period of these waves? A) 0.5 s B) 2 s C) 8 s D) 4 s 15. A motor is used to produce 4.0 waves each second in a string. What is the frequency of the waves? A) 0.25 Hz B) 15 Hz C) 25 Hz D) 4.0 Hz 16. A physics student notices that 4.0 waves arrive at the beach every 20. seconds. The frequency of these waves is A) 0.20 Hz B) 5.0 Hz C) 16 Hz D) 80. Hz 17. A periodic wave having a frequency of 5.0 hertz and a speed of 10. meters per second has a wavelength of A) 0.50 m B) 2.0 m C) 5.0 m D) 50. m 18. What is the wavelength of a light ray with frequency 5.09 10 14 hertz as it travels through Lucite? A) 3.93 10 7 m B) 5.89 10 7 m C) 3.39 10 14 m D) 7.64 10 14 m 19. A car s horn produces a sound wave of constant frequency. As the car speeds up going away from a stationary spectator, the sound wave detected by the spectator A) decreases in amplitude and decreases in frequency B) decreases in amplitude and increases in frequency C) increases in amplitude and decreases in frequency D) increases in amplitude and increases in frequency
20. A car s horn is producing a sound wave having a constant frequency of 350 hertz. If the car moves toward a stationary observer at constant speed, the frequency of the car s horn detected by this observer may be A) 320 Hz B) 330 Hz C) 350 Hz D) 380 Hz 21. What is characteristic of both sound waves and electromagnetic waves? A) They require a medium. B) They transfer energy. C) They are mechanical waves. D) They are longitudinal waves. 22. A single vibratory disturbance moving through a medium is called A) a node B) an antinode C) a standing wave D) a pulse 23. A series of pulses generated at regular time intervals in an elastic medium will produce A) nodes B) antinodes C) a polarized wave D) a periodic wave 24. Base your answer to the following question on The diagram below represents two pulses approaching each other. Which diagram best represents the resultant pulse at the instant the pulses are passing through each other? A) B) C) D)
25. The diagram below shows two waves traveling toward each other at equal speed in a uniform medium. When both waves are in the region between points A and B, they will undergo A) diffraction B) the Doppler effect C) destructive interference D) constructive interference 26. The diagram below represents a periodic wave. Which two points on the wave are out of phase? A) A and C B) B and F C) C and E D) D and G 27. The diagram below shows a standing wave. 28. Base your answer to the following question on The diagram below represents a light ray striking the boundary between air and glass. Point A on the standing wave is A) a node resulting from constructive interference B) a node resulting from destructive interference C) an antinode resulting from constructive interference D) an antinode resulting from destructive interference What would be the angle between this light ray and its reflected ray? A) 30. B) 60. C) 120. D) 150. 29. The change in the direction of a wave when it passes obliquely from one medium to another is called A) diffraction B) interference C) refraction D) superposition
30. A beam of monochromatic light approaches a barrier having four openings, A, B, C, and D, of different sizes as shown below. Which opening will cause the greatest diffraction? A) A B) B C) C D) D
Answer Key 2014 Waves I review 1. C 2. B 3. D 4. B 5. B 6. A 7. C 8. B 9. A 10. B 11. D 12. A 13. C 14. B 15. D 16. A 17. B 18. A 19. A 20. D 21. B 22. D 23. D 24. B 25. D 26. D 27. B 28. C 29. C 30. A