Science
Audible and inaudible sounds
In this Class 9 Science topic from “Sound Waves: Characteristics and Applications,” students learn why some sounds can be heard by humans while others cannot. The topic explains the role of frequency in hearing, introduces the ranges of audible, infrasonic, and ultrasonic sounds, and connects these ideas with sound-wave characteristics. Students also explore practical applications of ultrasonic and infrasonic waves in areas such as medical imaging, communication, animal navigation, and monitoring natural phenomena.
Your learning matters to us
Practice questions are not available for this topic yet. We plan to add questions with clear explanations soon. You can keep practising other topics in the meantime.
- Class / subject
- 9 · Science
- Chapter
- Sound Waves: Characteristics and Applications
- Topic
- Audible and inaudible sounds
Which topic do you need questions for first? Please contact our team and let us know. Your request will help us prioritise upcoming content.
Call / WhatsApp: +91 70036 70035