Music and Noise

Q. Question 17
We have learnt that vibration is necessary for producing sound. Explain why the sound produced by every vibrating body cannot be heard by us?

Q.

What is notes?

What is pitch?

Q.

what enables us to distinguish the roaring of a lion from the buzzing of a bee

Q.

A sound of a single frequency is called

1. Reverberation

2. Tone

3. Pitch

4. Echo

Q. When less sound vibrations reach our ears, we perceive it as a shrill sound.

1. False
2. True

Q. Which of the following is definitely low for a soft sound?

1. Speed
2. Frequency
3. Amplitude
4. Pitch

Q. Which of the following is not an effect of noise pollution?

1. Enhanced concentration
2. Hypertension
3. Hearing impairment
4. Lack of sleep

Q. Sound is produced:

1. By non-vibrating objects only
2. By vibrating and non-vibrating objects
3. By neither vibrating nor non-vibrating objects
4. By vibrating objects only

Q. Which of the following statements are true?

1. A note has sounds of a particular set of frequencies
2. Both A and B
3. None of the above
4. A tone has a particular frequency

Q. Which of the following measure would not help in controlling noise pollution in the residential areas?

1. Setting up industries away from residential areas
2. Maintenance of old vehicles and machines
3. Restriction on unnecessary honking
4. Cutting down trees

Q.

What is the difference between a note and a tone?

1. Note has a single frequency while a tone has mixed frequencies

2. Tone has a single frequency while a note has mixed frequencies

3. Note has a single frequency while a tone has mixed frequencies

4. Tone has a single amplitude while a note has mixed frequencies

Q. Pick the air based musical instrument.

1. Flute
2. Guitar
3. Violin
4. Drum

Q. Sound of single frequency is known as a/an

1. tone
2. note
3. overtone

Q. The characteristics of sound helps us differentiate between different types of sound.

1. True
2. False

Q. Which of the following is generally not a source of noise pollution in our surroundings?

1. Loudspeakers
2. Horns of buses, cars and trucks
3. Musical instruments
4. Firecrackers