Sound Waves

6. Which type of waves do sound waves belong to?

a) Transverse waves

b) Longitudinal waves

c) Electromagnetic waves

d) Mechanical waves

7. The speed of sound waves is affected by:

a) Temperature

b) Pressure

c) Density

d) All of the above

8. Which material would sound waves travel the fastest through?

a) Air

b) Water

c) Steel

d) Wood

9. The frequency range of human hearing is approximately:

a) 20-20,000 Hz

b) 1-10 Hz

c) 5-50,000 Hz

d) 100-1,000 Hz

10. The phenomenon of an increase in sound intensity when a sound source approaches a listener is known as:

a) Reflection

b) Refraction

c) Doppler effect

d) Interference