Question

Describe with the help of a diagram, how compressions and rarefactions are produced in air near a source of sound

Answer 1

Compression and refraction are produced as a result of disturbance in the medium such as water

Explanation:

• These disturbances are caused by sound waves
• The sound waves propagate with the help of these refraction and compression
• The particles of the medium start vibrating and create disturbances
• These disturbances make the particles of the medium come closer to each other
• Particles go further each other; more dense particles create compression and less dense create refraction

Learn more about Compressional waves here:

What is compression

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Answer 2

Answer:

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When the school bell is hit with a hammer, it moves forward and backwards producing compression and rarefaction due to vibrations. When it moves forward, it creates high pressure in its surrounding area. This high-pressure region is known as compression. When it moves backwards, it creates a low-pressure region in its surrounding. This region is called rarefaction.