Sound (vibrations, frequency, pitch, loudness, noise pollution)

Grade 6 Science — Sound (vibrations, frequency, pitch, loudness, noise pollution): 25 practice questions with instant scoring and explanations.

1. Sound is produced by the vibration of objects. Which of the following produces sound by vibrating?
2. Frequency of sound is the number of vibrations per second, measured in:
3. Which property of sound is related to how high or low it sounds?
4. Pitch of a sound depends upon the _______ of the vibrating object.
5. Loudness of sound is measured in units called:
6. Which sound has the highest pitch?
7. The amplitude of a sound wave determines its:
8. Sound travels fastest through which medium?
9. The speed of sound in air at room temperature is approximately:
10. Noise pollution is caused by:
11. Which of the following is NOT a source of noise pollution?
12. The normal conversation between two people has a loudness of approximately:
13. A sound with frequency less than 20 Hz is called:
14. Ultrasound is sound with frequency:
15. Dogs can hear sounds with frequencies that humans cannot. This is because:
16. An echo is formed when sound:
17. The time delay between a sound and its echo should be at least _______ seconds for us to hear them separately.
18. Which of the following materials is the best absorber of sound?
19. A musical note with low frequency sounds:
20. The loudness of a thunder sound is approximately:
21. In which medium does sound travel slowest?
22. A vibrating object creates sound waves that:
23. Sound cannot travel through:
24. When a speaker plays music loudly in a room, the phenomenon by which we hear sound reflected from walls is called:
25. A person exposed to continuous noise above 80 dB for a long time may suffer from: