11 markeasy
Which of the frequency ranges below is completely audible by a human who has average hearing?
Choose your answer
200 Hz to 200 kHz
5 Hz to 50 kHz
50 Hz to 5 kHz
50 kHz to 50 MHz
Co-ordinated Sciences (Double Award) — Physics
Sound — Multiple-Choice Questions (Cambridge International IGCSE Science): Exam Questions
Exam code:097312 questions · 12 marks · ≈ 12 min
21 markeasy
A tuba player plays a loud note on her tuba.
She then plays a quiet note of the same pitch.
Which property of the sound wave she produced has changed?
Choose your answer
Frequency
Wavelength
Amplitude
Speed
31 markeasy
A high frequency note is played on a violin.
The violinist then reduces the frequency of the note.
What change in the note do the audience hear?
Choose your answer
Pitch increases
Pitch decreases
Volume increases
Volume decreases
41 markeasy
Sound wave W has amplitude, *A, *and frequency, f.
Sound wave X is louder and lower in pitch than sound wave W.
What can be said about the amplitude and frequency of sound wave X?
| Amplitude | Frequency | |
|---|---|---|
| A | higher than A | higher than f |
| B | higher than A | lower than f |
| C | lower than A | higher than f |
| D | lower than A | lower than f |
Choose your answer
51 markmedium
When objects vibrate, they produce sound waves.
An object in a room vibrates. However, a person in that same room does not hear anything. Why not?
Choose your answer
The room contains no air.
The sound waves are travelling too fast.
The amplitude of the sound waves is too great.
The frequency of the sound waves is too great.
61 markmedium
After a lockdown drill at a school, the management team notes that the lockdown siren is too quiet, and its pitch is too low to be heard at a distance.
They call the company that supplied the siren and ask them to make the alarm louder, and to give it a higher pitch.
What effect does the change have on the resulting sound wave produced by the siren?
Choose your answer
It has a larger amplitude and a lower frequency.
It has a larger frequency and a lower amplitude.
It has a smaller frequency and a larger amplitude.
It has a larger frequency and a larger amplitude.
71 markmedium
Echoes can sometimes be heard where a person is surrounded by distant, hard, flat surfaces.
In Greek mythology, Echo is a mountain nymph who was cursed by Hera to be only able to repeat the last words she heard. This ends tragically when she falls in love with Narcissus who, alas, loves only his own reflection.
In Physics, which wave property causes an echo?
Choose your answer
Reflection
Refraction
Diffraction
Dispersion
81 markmedium
A boy named Narcissus participates in a class experiment to measure the speed of sound. He finds the large, flat wall of a building and stands a known distance away from it. He then claps his hands.
A very short time later, he hears the sound of the clap returning to him as an echo.
Why?
Choose your answer
The sound waves are reflected from the wall.
The sound waves are refracted by the wall.
The energy of the sound waves spreads out as they travel away from Narcissus.
The wind is blowing towards Narcissus, and the sound waves are blown back towards him.
91 markmedium
A student rubs a plastic rod with a cloth. The rod becomes negatively charged.
Which statement about the rod is correct?
Choose your answer
It gains electrons from the cloth and is attracted by a positively charged object.
It gains electrons from the cloth and is repelled by a positively charged object.
It loses electrons to the cloth and is attracted by a negatively charged object.
It loses electrons to the cloth and is repelled by a negatively charged object.
101 markhard
Extended tier only
In a common secondary school demonstration, a speaker is placed next to a lighted match.
A loud sound wave is played through the speaker, causing the flame to vibrate.
What type of wave is emitted from the speaker, and in which direction does the flame vibrate?
| wave type | direction of vibration | |
|---|---|---|
| A | transverse | ↔️ |
| B | longitudinal | ↔️ |
| C | transverse | ↕️ |
| D | longitudinal | ↕️ |
Choose your answer
111 markhard
In the olympic 100 m sprint final, a starting pistol is used to tell the sprinters when to start.
A spectator, sitting in the viewing area 300 m away sees the smoke from the pistol 0.86 s before hearing the bang. The spectator has exceptionally keen reactions and a very accurate internal clock.
Using only this information, what is the speed of sound in air?
Choose your answer
349 m/s
330 m/s
258 m/s
698 m/s
121 markhard
A walker can see a cliff face some distance away, and wants to estimate how far away it is.
He makes a loud noise, and times how long it takes the echo to come back. It takes 1.8 s.
If the speed of sound is 345 m/s, how far away is the cliff?
Choose your answer
192 m
96 m
621 m
311 m