The document is a physics revision on sound for a Cambridge secondary exam. It contains questions about the stages of hearing sound, the range of human hearing, frequencies audible to humans, and parts of the ear involved in hearing. The questions cover topics like: - The correct order of how we hear sounds from the source vibrating to sound waves reaching the brain. - The approximate range of frequencies, between 20-20,000 Hz, that are audible to humans. - Examples of sound sources and whether their frequencies would be audible. - Parts of the ear, like the inner ear, that are most vulnerable to damage from loud or sudden noises. - The unit used to

1. pg. 1 SIR. MUHAMMAD CAMBRIDGE VIII -1ST
SECONDARY
Revision on chapter 8 [SOUND] Topics [8.6 – 8.7 – 8.8]
CAMBRIDGE VIII –PHYSICS SIR.MUHAMMAD A.MAGEID
1. Place these stages describing how we hear sounds into the correct order. They are not
already in the correct order;
1-The sound waves inter our ears
2-The source of sound vibrates creating sound waves
3-The sound waves passes through the parts of our ear and stimulate nerves.
4-Sound waves pass through the air
5-The nerves send electrical signals to our brains.
A. 2 → 3 → 4 → 1 → 5
B. 2 → 3 → 4 → 5 → 1
C. 2 → 4 → 1 → 3 → 5
D. 2 → 4 → 1 → 5 → 3
2. What is the approximate range of hearing of a healthy human ear?
A. 2.0Hz to 2.0KHz
B. 2.0Hz to 20KHz
C. 20Hz to 2.0KHz
D. 20Hz to 20KHz
3. Which range of wave frequencies includes only sounds that can be heard by a human
with normal hearing
A. 3.0 Hz to 300 Hz
B. 30 Hz to 3000 Hz
C. 300 Hz to 30 000 Hz
D. 3000 Hz to 300 000 Hz
4. Which frequency produces a sound that can be heard by a person?
A. 2 Hz
B. 10 Hz
C. 2 KHz
D. 30 KHz

2. pg. 2 SIR. MUHAMMAD CAMBRIDGE VIII -1ST
SECONDARY
5. What can be heard by the human ear?
A. a whistle emitting a wave of frequency 50 KHz
B. a bat emitting a wave of frequency 30 KHz
C. an insect emitting a wave of frequency 300 Hz
D. a vibrating spring emitting a wave of frequency 5 Hz
6. Which part of your ear is most likely to be damaged by Exposure to loud noises over
a long period?
7. The measuring unit of sound intensity is :
A. dB
B. m/s
C. KHz
D. s

3. pg. 3 SIR. MUHAMMAD CAMBRIDGE VIII -1ST
SECONDARY
8. Which part of your ear is most likely to be damaged by an extremely loud sudden noise?
9. Which part of ear is the tube that connects the outer part of the ear to the middle ear?

4. pg. 4 SIR. MUHAMMAD CAMBRIDGE VIII -1ST
SECONDARY