"The Propagation of Sound" Sound PPT Courseware 5

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"The Propagation of Sound" Sound PPT Courseware 5

play for fun

Straighten the "telephone cord", one student speaks quietly into the microphone at one end of the telephone cord, and another student answers with the receiver at the other end of the telephone cord. Then exchange listening and speaking with each other.

How does sound get from one end of the "earth phone" to the other?

Sound spreads in the form of waves. When sound waves encounter an object, it causes the object to vibrate. This is how sound spreads from one place to another through various materials.

Do it

Note that one end of each material should be connected to the tuning fork respectively. Find a classmate to listen at the other end of the material. Pass the vibrating tuning fork through objects such as wooden rulers, measuring tapes, and cotton threads. Carefully listen and feel the vibration of the tuning forks, and compare the propagation of these objects. What's the difference in the sound.

Sound propagation requires a medium

The propagation of sound requires a medium, which can be a gas, liquid or solid. Usually we can hear sounds mainly because air can carry sound. Sound travels in the form of sound waves.

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Update Time: 2024-11-21

This template belongs to science courseware Fourth Grade Science Volume 1, Textbook Edition industry PPT template

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