The Music of Sound True or False Notes | Class 9 Science | Set 01

Welcome! Here, we present to you true or false notes on The Music of Sound chapter of Science Class 9 syllabus of SSC Board. Ten important questions are given from which you have to select the correct answer. You have to click on either the true option or the false option. True or false notes help to improve the understanding of the chapter The Music of Sound and help to score more marks. This is Set 01 of true or false notes on The Music of Sound with marks and answers. These are free online Science notes for class 9. Our notes are designed and thoroughly checked by experts and are completely error-free. Quizcrazy.in and team is proud to present true or false notes on The Music of Sound to you.

The Music of Sound Notes

01. Sound is a form of energy.

02. The SI unit of wavelength is centimetre.

03. The particles of the medium move from one part to another part during propagation of sound wave.

04. Sound requires a material medium for propagation.

05. Compressions are reqions of lowest pressures.

06. The SI unit of frequency is Hz.

07. The amount of energy passing per second through unit area is called the intensity of sound.

08. The SI unit of time period (T) is hour.

09. The sound of less than 20 Hz is called ultrasound.

10. Sound waves follow the same laws of reflection as light waves.