Make a stethoscope - Sound Energy Games
Take three bottle caps. Put a hole in the centre of those bottle caps and tie all three bottle caps using a string make it like a stethoscope and check the heartbeat of your friend using the stethoscope you made.
Make a yoghurt pot telephone - Sound Energy Games
Typical yoghurt pot and string could be also similarly used like plastic cup telephone game, here the strings are connected to the yoghurt pots and one can talk over it and understand the vibrations of sound over the string.
Measuring the speed of sound - Sound Energy Games
To measure the speed of sound we need stopwatch, tape measure (500 metres) and two large stones.
One person should stand at one end of the 500 metres with a large stone in both the hands and the other person should stand at the opposite end with a stopwatch.When a signal is given to the one having stones in hand the person bangs the stones together as hard as possible. The person with the stopwatch starts the timer when the stones are hit together, and stops it when the sound is heard to the person by the watch. The time should be recorded to the nearest tenth of a second. This experiment should be repeated to get an average time.
Speed of sound= distance / time (that is distance divide by time)
Thus speed of sound is calculated
Music in glass - Sound Energy Games
Glasses are filled with varying amounts of water. When the glass is struck by a spoon, the water and the glass began to vibrate simultaneously.Eventually, these air vibrations reach us as sound. As water is added to the glass, the amount of original vibrations are increased. Thus music is created in water filled glass