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FCAT Grade 8 Science Assessment Practice Questions

Category - FCAT Science Assessment Grade 8

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Which of the following is true about the speed of sound?
  1. The speed of sound is always 650 mph.
  2. The speed of sound is always 760 mph.
  3. The speed of sound depends on the listener.
  4. The speed of sound depends on device producing the sound.
  5. The speed of sound depends on the material the sound is traveling through.
Explanation
Answer: E - The speed of sound depends on the material it is traveling through, and is not always a fixed constant. The speed of sound in air is about 760 mph, but the speed of sound in water is about 4.5 times that, at nearly 3300 mph.
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