Quality of Sound

Q. The property of sound that helps us distinguish between two sounds of the same frequency and amplitude is called ________.

1. loudness
2. pitch
3. intensity
4. quality

Q.

Which characteristic of sound makes it possible to recognize a person by his voice without seeing him ?

Q. What is sound quality?

Q.

Explain the terms Noise and Music. Give examples for each. [3 MARKS]

Q.

Pick the odd one out giving reason

(a) Eardrum, oval window, multiple refraction, auditory nerves

(b) Sound, water, vacuum, Steel, air

(c) Amplitude of vibration, quantity of vibrating air, frequency, decibel

(d) Hearing loss, high blood pressure, physical pain, noise

Q. Sound produced by two instruments have different frequencies but the same amplitude. Choose the correct statement.

1. Their loudness will be same but pitch will be different.
2. Their pitch will be same but loudness will be different.
3. Both loudness and pitch will be different for the two sounds.
4. Both loudness and pitch will be same for the two sounds.

Q. Which of the following shows a note from a musical instrument?​​​​​​​

1. Figure A
2. Figure B
3. Figure D
4. Figure C

Q.

For same loudness and pitch ____.

1. there are equal number of waves

2. there are different waveforms

3. different waves are from same sources

4. waves are produced by only humans

Q.

Quality is the characteristic of sound _____.

1. which distinguishes two sounds of same loudness

2. which distinguishes two sounds of same pitch and different loudness

3. which distinguishes two sounds of same pitch and having same loudness

4. which distinguishes two sounds of same pitch

Q. Sound wave with multiple frequencies is called a tone.

1. True
2. False

Q. The characteristic of sound which distinguishes between a sharp sound and a dull sound is called loudness. True or false.

1. True
2. False

Q.

Mention one important use of echo.

Q.

Mixture of tone in a sound?

Q.

There are 3 friends A, B & C. A is planning to deceive B by imitating the voice of C, but B catches A in his mischief. Which of the following factors makes the sounds different?

1. Amplitude

2. Frequency

3. None of these

4. Both Amplitude and Frequency

Q. Name the characteristic of the sound affected due to a change in its following quantities:
(a) Amplitude
(b) Frequency

Q. During the earthquake people listened a strange noise and rushed out of homes. No error
(a) (b) (c) (d)

1. a
2. b
3. c
4. No error

Q. Fill in the blanks with suitable words.
Vibrating bodies produce _______

Q. State whether given statement is True or False
A man standing 25 m away from a wall produces a sound and receives the reflected sound.The man will be able to hear a distinct echo.

1. True
2. False

Q. Identify the onomatopoeic word(s):
As he entered the kitchen, he could hear the sizzle of steak on the pan, the plonk of a bowl of vegetables drowning into a cauldron of soup, and the shuffle of a dozen busy feet on the floor.

1. sizzle, steak, bowl
2. sizzle, plonk, shuffle
3. sizzle, plonk, cauldron
4. plonk, shuffle, dozen