# NCERT Class 9 Science Chapter 10 Sound Waves: Characteristics and Applications Solutions: In-Text and Exercise Questions Explained | SwaVid

Here are the questions from the new NCERT Class 9 Science textbook "Exploration", Chapter 10 "Sound Waves: Characteristics and Applications", along with...

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# Sound Waves: Characteristics and Applications

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Chapter 10 · Class 9 Science

Here are the questions from the new NCERT Class 9 Science textbook "Exploration", Chapter 10 "Sound Waves: Characteristics and Applications", along with their step-by-step solutions. These questions include both in-text (often labeled as 'Revise, Reflect, Refine') and end-of-chapter exercise questions, as found in the 2026-27 rationalised syllabus.

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In-text Questions (Revise, Reflect, Refine)

Answer: Sound is produced by vibrations. Common methods include plucking (e.g., guitar strings), striking (e.g., drums), blowing (e.g., flutes), and rubbing (e.g., violin strings).

End-of-Chapter Exercise Questions

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- Sound is produced by vibrations. When an object vibrates, it causes the surrounding medium (like air) to vibrate, creating sound waves. Different methods of causing vibrations lead to different ways of producing sound.
- Some common ways to produce sound include:
- 1. Plucking: When a stretched string is plucked (e.g., guitar, sitar), it vibrates and produces sound.
- 2. Striking: Hitting an object (e.g., drum, bell) causes it to vibrate and generate sound.
- 3. Blowing: Blowing air into or across an instrument (e.g., flute, whistle) causes the air column inside to vibrate, producing sound.
- 4. Rubbing/Friction: Rubbing surfaces together (e.g., violin bow on strings) can create vibrations and sound.
- 5. Shaking: Shaking an object (e.g., maracas) causes its components to vibrate and produce sound.
- NCERT Class 9 Science textbook: Exploration : Chapter 10: Sound Waves: Characteristics and Applications

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