Question

1. A boy felt like the sound level in his
room was too high. He turned the knob
of his music system to make it quieter.
What physical property of the sound
changed due to this and how did it
change?
a. Amplitude decreased
b. Frequency decreased

Answer 1

Answer:

Explanation:

The amplitude decreased .When the boy turned the knob of his music system he tried to reduce the volume which is basically the amplitude .

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Answer 2

a. Amplitude decreased making it quieter.

1. Sound is defined as the energy which travels in the form of longitudinal waves. It starts with the vibration of matter.
2. Sound requires a medium to travel and thus it holds the ability to travel through solid, liquid and gas.
3. Amplitude is responsible for the quiteness or loudness of sound. On the other hand, frequency determines the pitch of the sound.