Sound propagation of sound activity 1

=Activity No # 1 - Sound source using PhET=

Estimated Time
50 minutes

Materials/ Resources needed
Laptop, projector

Prerequisites/Instructions, if any

 * 1) Production of sound using different objects
 * 2) Use of tuning fork to produce sound
 * 3) Introduction to material waves

Process (How to do the activity)
Observe the simulation “Listen to a single source”.

Developmental Questions (What discussion questions)

 * 1) Enable the audio-enabled and check the difference between the speaker and the listener. Why is this so?
 * 2) When you increase the frequency – what are the changes you see, hear?  Do you come across these kinds of sounds (frequencies) anywhere.  When you change the frequency, the nature of sound changes.  There is a name for it.  Ask your teacher.  Where else does this aspect of sound come in?
 * 3) When you change the amplitude, what happens?  Based on what you hear, describe what you think is the meaning of amplitude.

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