Question

III. Fill in the blanks
7. Sound travels faster in
- medium. .
8. Sound wave consists of a region of high pressure called
9. We cannot hear sounds below
Hz.
10. Sound energy is transferred through the ------- of the
11. Veena and sitar are examples of
instruments
IV. Answer the following in one or two words
12. Waves in springs is an example of?​

Answer 1

Answer:

7.Solid 8.Compression 9.20 11. Stringed

Explanation:

7.The molecules of solid are closely packed so It takes less time to transfer the sound waves.