Question

A. Tick (✓) the correct answer.
1. Which of the following is not a
characteristic of sound?
a. Quality
b. Frequency
c. Pitch
d. Loudness
2. Which part of the ear is located
externally and visible?
a. Pinna
b. Auditory nerve
c. Tympanum
d. Cochlea
3. Echo is used for:
a. mapping
b. navigation
c. surgeries
d. all of the above
4. Sound cannot travel through:
a. air
b. water
C. vacuum
d. wood
5. Which of the following is a wind
instrument?
a. Tabla
b. Flute
c. Sitar
d. Violin
6. The number of oscillations per second is called:
a. frequency
b. amplitude
c. time period
d. timbre
7. Which of the following is harmful to the ears?
a. Sound of a breeze
b. Sound of an airplane
c. Sound of a toy
d. Sound of a flute
8. The middle ear does not consist of which of the following?
a. Hammer
b. Anvil
c. Eustachian tube
d. Stirrup​

Answer 1

Answer:

in first all are characterized of sound

2) a. pinna

3). all of these

4). vacuum

5) flute

6). frequency

7). sound of air plane

8). EUSTACHIAN TUBE

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Answer 2

1. a( quality)
2. a(pinna)
3. a(mapping)
4. b(water)
5. b(flute)
6. a(frequency)
7. b(sound of an airplane)
8. c(eustachian tube)