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Preview questions
1. What is sound?
A form of light · A form of energy · A type of matter · A chemical reaction
2. What medium is sound unable to travel through?
Water · Air · Vacuum · Solid
3. Which of the following is a characteristic of sound waves?
They can travel through space · They are longitudinal waves · They are always audible · They do not require a medium
4. What determines the pitch of a sound?
Amplitude · Frequency · Wavelength · Speed
5. Which instrument is used to measure sound intensity?
Thermometer · Barometer · Decibel meter · Speedometer
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