Activity 3:
6. A low frequency sound has a

A low

B. high

pitch.

C. moderate

7. It is an extremely low vibrational frequency.

A. Infrasonic frequency B. Megasonic frequency

D. strong

C. Supersonic frequency

D. Ultrasonic frequenc

8. In what way do mechanical waves transport energy from one place to another?

A Particles travelling in a vacuum

B. Vibrating and traveling particles

C. Particles traveling with the wave

D. Alternately vibrating particles of the medium

9. What is the SI unit of frequency?

A. Hertz

B. Meter

C. Meter per second

D. Second

10. Which of the following is the symbol used for wavelength?

A

B. v

C.F

11. What is the lowest point of a transverse wave?

A Compression

B. Crest

C. Rarefaction

D. Trough

12. It refers to the distance in which the wave travels per unit time.

A Amplitude

13. It refers to the highness or lowness of sound

A Loudness

B. Noise

C Pitch

D. Timbre

14. It refers to the number of cycles occurring per unit time.

A Amplitude

B. Frequency

C. Period

D. Wavelength

15. It is a vibrational frequency beyond 20 000 Hz

A Infrasonic frequency

B. Magasonic frequency

C. Wavelength B. Frequency

C. Supersonic frequency

D. Wave speed

D. Ultrasonic frequency​