Chapter Review Waves Part a Vocabulary Review Answers
Nuts of Waves Review
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1. A unmarried disturbance that moves from point to point through a medium is called a ___.
| a. catamenia | b. periodic wave | c. wavelength | d. pulse |
Answer: D
A wave is a continuous and repeating disturbance of a medium and a pulse is a single disturbance.
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2. If the particles of the medium are vibrating to and fro in the same management of free energy ship, then the wave is a ____ wave.
| a. longitudinal | b. sound | c. standing | d. transverse |
Answer: A
In longitudinal waves, particles of the medium vibrate to and from in a direction parallel to the direction of energy transport. If energy is transmitted forth a medium from the east terminate to the west stop, and so particles of the medium would vibrate eastward and westward
A audio wave is a longitudinal wave just non the answer since a wave which exhibits this characteristic is non necessarily a sound wave.
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three. When the particles of a medium are vibrating at right angles to the direction of energy transport, then the wave is a ____ moving ridge.
| a. longitudinal | b. sound | c. standing | d. transverse |
Reply: D
In transverse waves, particles of the medium vibrate to and from in a direction perpendicular to the management of free energy send.
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iv. A transverse wave is traveling through a medium. See diagram below. The particles of the medium are vibrating _____ .
| a. parallel to the line joining Advertisement. | b. along the line joining CI. |
| c. perpendicular to the line joining Advertisement. | d. at various angles to the line CI. |
| e. along the curve CAEJGBI. |
Answer: A
In transverse waves, particles of the medium vibrate to and from in a management perpendicular to the direction of energy transport. In this case, that would be parallel to the line Advertizing.
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5. If the energy in a longitudinal moving ridge travels from south to north, the particles of the medium would exist vibrating _____ .
| a. from n to south, just | b. both north and due south |
| c. from east to w, but | d. both east and west |
Answer: B
In longitudinal waves, particles of the medium vibrate to and from in a direction parallel to the direction of free energy transport. If the particles only moved north and not back south, then the particles would be permanently displaced from their residue position; this is not wavelike.
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6. As a pulse travels though a uniform medium, the speed of the pulse ____.
| a. decreases | b. increases | c. remains the same |
Respond: C
The speed of a moving ridge or a pulse depends upon the properties of the medium. If the medium is uniform or unchanging, so the speed is constant.
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7. The main factor which furnishings the speed of a sound wave is the ____.
| a. aamplitude of the sound wave | b. intensity of the sound |
| c. loudness of the sound | d. backdrop of the medium |
| due east. pitch of the audio |
Reply: D
The speed of a wave is dependent upon the properties of the medium and not the properties of the wave.
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8. As a moving ridge travels into a medium in which its speed increases, its wavelength would ____.
| a. decrease | b. increment | c. remain the same |
Answer: B
Equally a wave crosses a purlieus into a new medium, its speed and wavelength change while its frequency remains the aforementioned. If the speed increases, and then the wavelength must increase besides in order to maintain the same frequency.
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9. As a wave passes across a boundary into a new medium, which characteristic of the wave would Non alter?
| a. speed | b. frequency | c. wavelength |
Respond: B
As a wave crosses a boundary into a new medium, its speed and wavelength change while its frequency remains the same.
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10. What is the amplitude of the moving ridge in the diagram beneath?
| a. 0.03 thou. | b. 0.04 grand. | c. 0.05 m. | d. 0.06 m. |
Answer: A
The amplitude of a wave is measured from residue to crest or from residuum to trough; simply not from crest to trough. Thus, take the 0.06 grand measurement and "halve it" to become the answer.
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eleven. The wavelength of the wave in the diagram higher up (Question #ten) is ____ m.
| a. 0.030 | b. 0.040 | c. 0.060 | d. 0.080 |
Respond: D
The wavelength of a wave is measured as the distance between whatsoever ii corresponding points on adjacent waves, which would mean from a crest to the side by side adjacent crest. Thus, the distance from betoken b to signal d is the wavelength - 0.08 m
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12. A wave Ten meters long passes through a medium with a speed of Y meters per second. The frequency of the moving ridge could be expressed as
| a. Y/X cycles/sec. | b. X/Y cycles/sec. | c. XY cycles/sec. | d. (X + Y) cycles/sec. |
Answer: A
Let d = wavelength. Since d*f = five, f = v/d.
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Consider the following diagram for Questions #thirteen-#xiv.
13. How many complete waves are shown in the diagram?
Answer: D
From point A to point Eastward is 1 full wave bike. After betoken East, the wave begins to repeat itself, but only for one-half of a cycle. Thus, there are one.5 waves shown in the diagram.
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14. If the distance from betoken A to indicate B in the diagram is 60 cm, then the wavelength is ____.
| a. 20 cm. | b. twoscore cm. | c. 60 cm. | d. 90 cm. |
Answer: B
From point A to indicate Eastward is 1 total wave cycle. This distance represents two-thirds of the 60 cm from A to G. Thus, the wavelength is (2/iii)*60 cm = 40 cm.
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