Choose the correct option in each of the following:

1. What helps us distinguish between the same note of the same loudness produced by two musical instruments?
(a) Pitch
(b) Frequency
(c) Harmonics
(d) Amplitude

2. The frequencies of harmonics are:
(a) Not related to the frequency of the fundamental
(b) Constants
(c) Multiples of the frequency of the fundamental
(d) Less than the frequency of the fundamental

3. Sound travels:
(a) The fastest in air
(b) The fastest in vacuum
(c) Faster in air than in water
(d) Faster in solids than in air

4. The decibel is a unit that measures:
(a) Loudness
(b) Pitch
(c) Frequency
(d) Quality

5. Women are more high-pitched than men because their vocal cords:
(a) Are tauter
(b) Are shorter
(c) Are thicker
(d) Vibrate less

6. The ceilings of theatres are covered with special materials to:
(a) Increase the reflection of sound
(b) Minimise the reflection of sound
(c) Increase regular reflection of sound
(d) Increase the loudness of sound