Sound Sense: 8th Grade Quiz

Froggy Jumps

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Sound basics quiz

Sheethal

India

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Sound Sense: 8th Grade Quiz


Froggy Jumps Sound Sense: 8th Grade QuizVersion en ligne Sound basics quiz par Sheethal 1 Which property of a sound wave determines its pitch? a Frequency b Amplitude c Wavelength 2 What is the unit used to measure the intensity of sound? a Hertz (Hz) b Pascal (Pa) c Decibel (dB) 3 Which medium usually carries sound waves fastest? a Solids b Vacuum c Gases 4 An echo is a reflection of sound that returns to the listener after bouncing off a surface. Which factor affects the strength of an echo? a Distance from the reflecting surface b Color of the surface c Frequency of the sound 5 What happens to a sound wave when it enters a denser medium? a Speed decreases b Frequency increases c Amplitude increases 6 Which term describes the number of vibrations per second of a sound wave? a Wavelength b Frequency c Amplitude 7 Loudness is related most closely to which property of a sound wave? a Frequency b Amplitude c Wavelength 8 Which device can convert sound energy into electrical energy? a Microphone b Antenna c Speaker 9 If two sound sources vibrate at slightly different frequencies, what phenomenon occurs? a Diffraction b Beats c Refraction 10 Which phenomenon explains why sound travels slower in air than in water? a Density difference between media b Higher temperature only c Equal densities