IB myp 4-5 physics – Practice Questions- All Topics
Topic :Waves-Sound Waves
Topic :Waves– Weightage : 21 %
All Questions for Topic :Reflection, refraction, diffusion, longitudinal \& transverse waves
Question (13 marks)
Some musical instruments, such as the guitar, make sounds by vibrating strings.
Question a (2 mark)
The student’s research question is:
How does increasing the force of tension affect the frequency of vibration of a wire?
Suggest two variables the student should have controlled during this investigation.
Control variable 1:
Control variable 2 :
▶️Answer/Explanation
Ans:
Control variable 1: Length of the string
Control variable 2 : thickness / diameter of the string
Question b (4 mark)
The student’s notebook containing the results from this investigation is shown below:
Organize and present the data in a table.
▶️Answer/Explanation
Ans:
Question:
Which animal is best able to hear sounds at:
a) 10Hz
▶️Answer/Explanation
Ans: Chicken
b) 1kHz?
▶️Answer/Explanation
Ans: Human