Sound Produced by Us

Q. Sort the following in the correct order of the propagation of sound in a human ear.

1. Ear drum
2. Ear canal
3. Pinna
4. Three tiny bones
5. Cochlea

Q.

Tabla is a string instrument

1. True
2. False

Q. Voice box is also known as _________.

1. Larynx

2. Duodenum

3. Salivary gland

4. None of these

Q. Give scientific reasons:
It is essential to change the tension on the vocal cords, as we produce different sound notes from our larynx.

Q.

Select the only false statement out of the following

1. Sound travels as a wave,

2. In air, sound waves are longitudinal waves.

3. Only vibrating objects produce sound.

4. Sound travels faster in vacuum than in air.

Q. In humans, the vibration of vocal cords produces sound.

1. True
2. False

Q. Sound is produced due to of particles.

1. vibration
2. rotation
3. charge

Q. In a flute, sound is produced due to vibration of the air column formed in its hollow tube.

1. True
2. False

Q.

We must never put sharp, pointed objects into our ears as the eardrum can get damaged.

1. True

2. False

Q. consists of a thin membrane in the ear that starts vibrating on receiving sound waves.

1. Pinna
2. Eardrum
3. Cochlea

Q. The approximate length of vocal cords in men is

1. 5 mm
2. 10 mm
3. 15 mm
4. 20 mm

Q.

Given below are two sets with four terms each. In each set, a term is an odd one and cannot be grouped in the same category to which the other three belong. Identify the odd one in each set and name the category to which the remaining three belong.

(i) Semicircular canal, cochlea, tympanum, utriculus.

Q. What is the other name of the voice box which enables us to speak?

1. Larynx
2. Sound box
3. Throat
4. Pharynx

Q.

In humans, which organ produces sound?

1. Mouth

2. Windpipe

3. Larynx

4. Tongue

Q.

Look at the following figure and choose the correct statement regarding sound propagation in this case.

1. Sound travels only as a longitudinal wave.

2. Sound does not travel as sound requires air as a medium for its propagation.

3. Sound travels as both transverse and longitudinal waves.

4. Sound travels only as a transverse wave.

Q.

Vocal cords are present in ___.

1. oesophagus

2. ear drum

3. pharynx

4. larynx

Q. Which of the following statements are correct regarding longitudinal waves?

1. Compressions and rarefactions are formed
2. Particles oscillate about their mean positions
3. Particles oscillate perpendicular to the direction of wave propagation
4. Particle oscillate parallel to the direction of wave propagation