Questions on Sound

Q1.	Listening to a radio
Q2.	Sounds made by pipes of different lengths.
Q3.	Speed of sound in different states of matter/string telephone.
Q4.	Sound waves cannot travel through a vacuum.
Q5.	dB (using graph data)
Q6.	Ripples in a pond.
Q7.	Vibrations from jumping.
Q8.	The ear - wax in it.
Q9.	Vibrations from a flute causing a window to vibrate - includes oscilloscope traces.
Q10.	Oscilloscope traces.
Q11.	Personal alarm.

Also see the following questions from another section.

Comparing light to sound Q4; Q5; Q18