Question

B. Fill in the blanks.
1. An object that does not vibrate cannot produce _______
2. Sound travels in the form of ____
3. Vibration means _______motion of an object.
4. The larynx has two folds called _
5. Sound waves are ____ in nature.
6. The SI unit of frequency is _____
7. Loudness of a sound depends upon the_________ of the sound.
8. The repetition of sound produced due to the reflection of sound waves from a reflecting surface
known as an __________
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Answer 1

1. sound
2. waves
3. to - fro
4. vocal cords
5. longitudinal
6. Hz
7. Amplitude
8. Echo.

Hope these helps you.

Answer 2

Answer:

Here your answer

Explanation:

1) Sound

2) wave

3) to and fro

4)Vocal

5)longitudinal

6) Hertz(Hz)

7)Amplitude

8) Echo

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