"The Generation and Propagation of Sound" Sound Phenomenon PPT Courseware 11

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"The Generation and Propagation of Sound" Sound Phenomenon PPT Courseware 11

Explore the production of sound

Give it a try:

A piece of paper, a rubber band, a pen cap, a glass of water, how to make them make a sound? Compare and see, who has more methods? Whose approach is different?

Think about it:

What is the difference between the above objects when they make sounds and when they don't? What characteristics do objects have in common when they make sounds?

production of sound

Vibrations of solids, liquids, and gases can all produce sound and can all be used as sound sources.

Thinking: When you hit the drum head, can you see the drum head vibrating?

Discussion: What method can be used to prove that the drum head that produces sound is also vibrating?

Thinking: Strike the gong and it will make a sound. If you hold down the gong with your hand, why will the sound stop immediately?

propagation of sound

Can liquids carry sound?

Can you give some more examples to illustrate?

in conclusion:

Sound can propagate in solids, liquids, and gases

1. Describe the phenomenon you observed

2. What did the experiment show?

Sound cannot travel in a vacuum

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Update Time: 2024-11-16

This template belongs to Physics courseware Beijing Normal University eighth grade physics volume one industry PPT template

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