CIE iGCSE Co-Ordinated Science P3.4 Sound Exam Style Questions Paper 2
Question
Humans can hear sounds with a range of frequencies.
Which row shows the smallest frequency and the greatest frequency that can be heard by a healthy human ear?
▶️Answer/Explanation
Ans: B
Question
Which change to a sound wave makes the sound louder?
(A) decreasing the amplitude
(B) decreasing the wavelength
(C) increasing the amplitude
(D) increasing the wavelength
▶️Answer/Explanation
Ans: C
Question
The amplitude of a sound wave increases, and the frequency of the wave decreases.
What is the effect on the loudness of the sound and on the pitch of the sound?
▶️Answer/Explanation
Ans: B
Question
The sound heard from the siren of a police car becomes quieter and lower pitched as the car moves away from an observer.
Which row describes what happens to the amplitude and frequency of the sound wave heard by the observer?
▶️Answer/Explanation
Ans : A