Study Guides - Cherokee County Schools

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Name Date Class 4 42 Using Sound <strong>Study</strong> Guide Using Sound Directions: Answer the following questions on the lines provided. 1. What is acoustics? 2. Why would reverberation be a problem when using a gym for a concert? 3. What would an acoustical engineer consider when designing a concert hall? How could reverberation be reduced? 4. Describe echolocation and tell how bats use it to locate food. 5. What is sonar? 6. Explain how ultrasound is used to produce images of internal structures in the body. 7. When is it better to use ultrasound and when is it better to use X rays for detecting medical problems? 8. Why might ultrasound be a treatment of choice over surgery for kidney stones? Chapter 11 Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc. Name Date Class Directions: List three ways when you could use electromagnetic waves at home. 1. 2. 3. Directions: List four similarities between sound and water waves. 4. 5. 6. 7. 1 <strong>Study</strong> Guide What are electromagnetic waves? Directions: Unscramble the terms to fill in the summary sentence blanks. Chapter 12 Electromagnetic waves are different from sound and water waves because they can travel in (8) (eacsp) as well as (9) (tramet). Electromagnetic waves are made of vibrating (10) (tricleec) and (11) (ginetamc) fields. Both of these fields surround an electric (12) (grache) that is (13) (ngivmo). The vibrating electric field around a vibrating charge produces a vibrating magnetic field and the vibrating magnetic field produces a vibrating electric field. As a result, these fields continually (14) (eeactr) each other. These fields are always (15) (reepraplicdun) to each other and travel (16) (wotdaur) from the vibrating charge. Because they vibrate at right angles to the (17) (notidreci) that the wave travels, electromagnetic waves are (18) (seervrtnsa) waves. An electromagnetic wave carries (19) (trainda) energy. All objects emit electromagnetic waves because they contain electric charges that are always in (20) (ntmioo). Electromagnetic waves sometimes behave as (21) (sleipcrat) called (22) (toonsph). What are electromagnetic waves? 43
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Study Guides - Cherokee County Schools

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