Sound
Why thunder follows lightning, why a big drum sounds low, and why space really is silent.
What this lesson covers
Sound is a 8-part Class 10 Physics lesson. Each part makes one point and then hands over to the next, so it can be read in a sitting or picked up again at the part you stopped on. It defines the idea in plain words before using it, works through an example step by step, breaks the topic into its parts and compares them, shows where it is used outside the textbook, names the mistakes that cost marks in an exam, ends with a recap of what to remember.
How it begins
Sound is produced by a vibrating object: a drum skin, a guitar string, your vocal cords. The vibration pushes nearby air particles together, and they push their neighbours, so the disturbance travels outward. That makes sound a longitudinal wave: the particles oscillate along the direction the wave travels, producing compressions (particles bunched) and rarefactions (particles spread).
The 8 parts
- Sound is a longitudinal wave
- Pitch, loudness and speed
- Echoes and the speed of sound
- Ultrasound and echo sounding
- Sound in daily life
- Where marks get lost
- What to remember
- Watch one worked through
Practise Sound
Everything on QuizByt for Class 10 Physics that goes with this lesson: read it first, then test yourself while it is fresh.
🧠 5 quizzes on Sound (2 easy, 2 medium, 1 hard)
Work up from easy to hard: the hard quiz asks the Class 10 exam-style questions on Sound.
🖨️ Printable worksheet
Sound on paper for Class 10, with room to write the working out. Preview the first page free.
🎮 Games for Class 10 Physics
Memory and reasoning games at the right level for Class 10. Passing a quiz on Sound earns the credits that open them.
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