Question Paper
Class / Subject: Class 9 (ICSE) · Physics
Chapter: Chapter 8 — Chapter 8: Propagation of Sound Waves
Time Allowed: 32 minutes
Max Marks: 16
1. What type of wave is sound? [1]
(A) Longitudinal
(B) Transverse
(C) Neither type
(D) Both types equally
2. What do sound waves create as they travel? [1]
(A) Compressions and rarefactions
(B) Only compressions
(C) Only rarefactions
(D) Neither
3. Can sound travel through a vacuum? [1]
(A) No
(B) Yes, easily
(C) Only sometimes
(D) Sound doesn't exist
4. What does sound need to travel? [1]
(A) A medium (solid, liquid or gas)
(B) Nothing at all
(C) Only a vacuum
(D) Only light
5. Where does sound travel fastest? [1]
(A) Solids
(B) Liquids
(C) Gases
(D) Vacuum
6. Where does sound travel slowest? [1]
(A) Gases
(B) Solids
(C) Liquids
(D) It travels equally everywhere
7. What is the Doppler effect related to? [1]
(A) Sound wave propagation and perceived pitch change
(B) Only light
(C) Only heat
(D) Nothing related to sound
8. Why study sound wave propagation? [1]
(A) To explain echoes and how we hear sounds
(B) No reason
(C) It's not useful
(D) Only for tests
9. What type of wave is sound? [1]
(A) Longitudinal
(B) Transverse
(C) Neither type
(D) Both types equally
10. What do sound waves create as they travel? [1]
(A) Compressions and rarefactions
(B) Only compressions
(C) Only rarefactions
(D) Neither
11. Can sound travel through a vacuum? [1]
(A) No
(B) Yes, easily
(C) Only sometimes
(D) Sound doesn't exist
12. What does sound need to travel? [1]
(A) A medium (solid, liquid or gas)
(B) Nothing at all
(C) Only a vacuum
(D) Only light
13. Where does sound travel fastest? [1]
(A) Solids
(B) Liquids
(C) Gases
(D) Vacuum
14. Where does sound travel slowest? [1]
(A) Gases
(B) Solids
(C) Liquids
(D) It travels equally everywhere
15. What is the Doppler effect related to? [1]
(A) Sound wave propagation and perceived pitch change
(B) Only light
(C) Only heat
(D) Nothing related to sound
16. Why study sound wave propagation? [1]
(A) To explain echoes and how we hear sounds
(B) No reason
(C) It's not useful
(D) Only for tests