Practice Characteristics Of Sound (3) - Chapter 7 : Sound

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8 questions

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2 cards from this section. Quick, good the night before a test.
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6 sample questions

Question 1.
What unit measures frequency?
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Think of the term 'Hertz.'
Question 2.
What is the safe dB range for human hearing?
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Remember, exposure above 85 dB can be harmful.
3Question 3.
What does the term frequency refer to?
- Sound intensity
- Vibrations per second
- Volume level
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Think about how often something moves in a second.
4Question 4.
True or False: Sound can travel in a vacuum.
- True
- False
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Consider the need for particles to transmit vibrations.
Question 5.
If a musician plays an instrument at 440 Hz, and you are 100 meters away, calculate how long it takes for the sound to reach you, assuming it travels at 343 m/s.
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Use the speed formula distance equals speed times time.
Question 6.
Consider an environment where sounds are consistently above 85 dB. Discuss the potential effects on both health and community noise levels.
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Think about both physiological and social impacts.

4 more questions in this section. Enroll free to practise them all.