MCQ Class 9 Science Exploration Chapter 10 Sound Waves: Characteristics and Applications

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1. What happens to sound intensity as distance increases?

Question 1 of 20

2. What actually reaches your ear when you hear sound?

Question 2 of 20

3. Which device converts sound energy into electrical energy?

Question 3 of 20

4. Which device converts electrical energy into sound?

Question 4 of 20

5. The crest in a sound wave represents:

Question 5 of 20

6. The trough in a sound wave represents:

Question 6 of 20

7. Which graph can represent sound waves?

Question 7 of 20

8. What is the relation between speed, frequency, and wavelength?

Question 8 of 20

9. If frequency increases, wavelength will:

Question 9 of 20

10. Sound travels slowest in:

Question 10 of 20

11. Pitch of sound depends on:

Question 11 of 20

12. Loudness of sound depends on:

Question 12 of 20

13. Which sound has higher pitch?

Question 13 of 20

14. Which sound is louder?

Question 14 of 20

15. Noise is defined as:

Question 15 of 20

16. Which animal can detect ultrasonic waves?

Question 16 of 20

17. Which animal uses echolocation?

Question 17 of 20

18. SONAR is used for:

Question 18 of 20

19. What type of waves are used in SONAR?

Question 19 of 20

20. Sound energy spreads as:

Question 20 of 20


 

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