Subject: General Science
Book: NCERT Science Class 8
Sound is a form of energy produced by vibrations.
- **Characteristics of Sound**:
- Pitch, loudness, quality.
- **Propagation**:
- Travels through solids, liquids, gases.
- **Uses of Sound Waves**:
- SONAR, communication.
**Possible Exam Questions:**
1. What is the difference between pitch and loudness?
2. How does sound travel through different mediums?
3. What is the role of SONAR in underwater exploration?
4. Explain the working of the human ear.
5. Discuss harmful effects of noise pollution.
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