Quiz
 Can You Keep That Noise Down?
 Who was the Greek philosopher and mathematician who  experimented with the vibration of strings in the 500’s B.C.? A) Pythagoras B) Archytas C) Galileo D) Aristotle What is the sound related method used to clean delicate instruments, deflect flaws in metals and other materials and to diagnose brain tumors and other disorders? A) Sonar B) Ultrasound C) Soundproofing D) Sound Medium Decibels use a A) Linear scale B) Logarithmic Scale By the intensity of the sound waves returning, using sonar, scientists and geologists can tell how far an area is away from them, such as fishing boats detecting schools of fish. A) True B) False Ultrasound is sound with frequencies above how many hertz? A) 100 B) 1000 C) 10000 D) 20000 The frequency at which an object would vibrate is called A) Rarefaction B) Resonance C) Intensity D) Sound medium The region in a sound wave in which the sound medium is less than normal is called A) Condensation B) Rarefaction C) Sound medium D) Hertz A hertz is a unit of measurement of A) intensity B) Frequency C) Loudness D) Wavelength Sound quality is also called A) Ultrasound B) Rarefaction C) Timbre D) Acoustics  What is the correct definition of  sound-related condensation? A) a region in a sound wave in which the sound medium is denser than normal. B) a substance in which sound waves travel C) is the degree of highness or lowness of a sound as we hear it D) is a region in a sound wave in which the density of the sound medium is less than normal   Click here for “Answers”.
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