How to measure the speed of sound in the air?

Question 1

What is the first step of the method?

Answer 1

Set up the oscilloscope so that each of the microphones are connected separately. This way, the detected waves at each microphone are shown as separate waves.

Question 2

What is the second step of the method?

Answer 2

Turn on the signal generator + speak

Question 3

What is the 3rd step of this method?

Answer 3

Start with both microphones next to the speaker, so that both of the waves on the oscilloscope line up.

Question 4

What is the 4th step of the method?

Answer 4

Move one of the microphones away from the other slowly, until the waves align again.

Question 5

What’s the 5th step of the method?

Answer 5

The distance between the 2 microphones is the wavelength so measure it.

Question 6

What is the last step?

Answer 6

Calculate the wave speed by doing wavelength x frequency