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Sound Waves: Characteristics and Applications

Science · CBSE Class 9 · English Medium · 15 questions and answers

Sample questions

Q: How is sound produced?

A: Sound is produced by vibrating objects.

Q: Does sound require a medium for propagation?

A: Yes. Sound requires a material medium and cannot travel through a vacuum.

Q: What type of wave is sound in air?

A: Sound in air travels as a longitudinal wave consisting of compressions and rarefactions.

Q: What is a compression?

A: A compression is a region of a longitudinal wave where particles are closer together and pressure is higher.

Q: What is a rarefaction?

A: A rarefaction is a region where particles are farther apart and pressure is lower.

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