Sound. Chapter Test A. Multiple Choice. 1 Pearson Education, Inc., or its affiliates. All rights reserved.
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1 _ Sound Chapter Test A Multiple Choice Write the letter of the correct answer on the line at the left. _ 1. Sound is a disturbance that travels through a medium as a a. longitudinal wave. b. surface wave. c. standing wave. d. transverse wave. _ 2. Why did Chuck Yeager s team choose a high altitude to try to break the sound barrier? a. The temperature is lower, so the speed of sound is higher. b. The temperature is lower, so the speed of sound is lower. c. The temperature is higher, so the speed of sound is higher. d. The temperature is higher, so the speed of sound is lower. _ 3. The changing pitch of a police car s siren as it moves by you is an example of a. the Doppler effect. b. resonance. c. the speed of sound. d. intensity. _ 4. A fundamental tone has only one a. frequency. b. pitch. c. timbre. d. intensity. _ 5. Which term refers to how high or low a sound seems to a person? a. loudness b. intensity c. frequency d. pitch _ 6. Which component of the technological system is achieved when your camera takes a photograph? a. input b. feedback c. goal d. constraint _ 7. What is a set of tones combined in a way that is pleasing to the ear? a. noise b. sound c. music d. timbre 1
2 8. Which part of your ear do sound waves enter through? a. ear canal b. eardrum c. earlobe d. cochlea 9. What do some bats use to locate food and to navigate? a. dissonance b. echolocation c. infrasound d. acoustics 10. Doctors are able to make sonograms through the use of a. ultrasound. b. infrasound. c. sonar. d. acoustics. Completion Fill in the line to complete each statement. 11. Technology solve every problem. 12. The factors that can change in an experiment are called. 13. A short string under a certain tension generally produces a sound with a higher than a long string under the same tension. 14. The ear canal ends at a tightly stretched membrane called the. 15. Two possible problems with emerging technologies are that they may be and may not work perfectly. True or False If the statement is true, write true. If it is false, change the underlined word or words to make the statement true. 16. The frequency of the sound waves produced by a string increases as the tension of the string decreases. 17. The speed of sound in air decreases with increasing temperature. 18. The hammer, anvil, and stirrup are bones that make up the inner ear. 19. Dolphins use sonograms to hunt at night. 20. If a sound source is moving towards you, you will hear a higher pitch. 2
3 Using Science Skills Use the diagram to answer each question. 21. In which medium listed in the table does sound travel fastest? 22. Compare the speed of sound in iron with the speed of sound in lead. Based on their relative speeds, what might you say about the stiffness and density of iron and lead? 23. Explain why there is a difference between the speed of sound in air at 0 C and the speed of sound in air at 20 C. 3
4 Essay Write an answer for each of the following questions on a separate sheet of paper. 24. How does a gong make a sound when it is struck? 25. How is the sound quality of an instrument related to the overtones it produces? Using Science Skills Use the diagram to answer questions What type of sound waves does the sonar device produce? 4
5 27. What is happening in the diagram? 28. What do the arrows that run from A to B represent? Essay Write an answer for each of the following questions on a separate sheet of paper. 29. Describe the functions of the three main sections of the ear. 30. What does a hearing aid do? How does it work? 5
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