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

Website interactives/ links/ simulations

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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