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Seedha Education

ScienceSound

Class 9ScienceChapter 115 marksModerate

Watch this chapter

Science · Class 9SoundVideo coming soonRead the notes instead

Production and Propagation, Characteristics of a Sound Wave, Reflection of Sound and the board questions built on them — roughly 5 marks of the paper.

What this chapter covers

  1. 1Production and Propagation
  2. 2Characteristics of a Sound Wave
  3. 3Reflection of Sound
  4. 4Applications of Ultrasound

These lessons are being recorded. The written notes for this chapter are free to download now.

Learning resources

In the notes

Topics covered

  1. 01Production and Propagation24:16
  2. 02Characteristics of a Sound Wave28:43
  3. 03Reflection of Sound27:04
  4. 04Applications of Ultrasound13:04

After this chapter you can

  • Explain production and propagation without reading from the book
  • Present characteristics of a sound wave in the format the marking scheme rewards
  • Attempt every previous year question set on this chapter
Marks
5
PYQs
17
Video
1h 33m

Then do the work

Practice

Important questions
45
Board questions
22
Numericals & applications
11
Open practice set

Revise

  • One-shot revision, 23 minutes
  • Formula sheet for this chapter
  • Printable summary, 2 pages
Revision material

Prepare

Board appearances of Sound by year
YearAsked asMarks
2025Case based6
2024MCQ set2
2023Long answer2
2022Short answer4
2021Case based4
All PYQs

    Follow the Seedha path

    Target 95+ in Science

    Padho, Likho, Revise and Marks Laao. Chapter 11 of 12 — keep going while the format is fresh.