Sound

Question 0

Measuring the speed of sound

Answer 0

Use an oscilloscope
Set generator to give sound and put the two microphones near the speaker
Slowly move one away and observe the two traces
When the two microphones are exactly one wavelength apart from one another on the screen, that is the the wavelength

Question 1

Sound waves

Answer 1

Produced by objects that vibrate
Longitudinal wave
Can travel through any medium with particles

Question 2

Reflection

Answer 2

Behave the same as any other wave
Reflected sound wave is an echo
Ships can use this to find how deep the water is

Question 3

Diffraction

Answer 3

Sound waves with a wavelength that is the same as the gap will diffract