Sound Test

Result

Sound Test - 35

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Weekly Quiz Competition

Question 1
1 / -0

A guitar string when struck exhibits :

A
vibratory motion

B
rotational motion

C
translatory motion

D
circular motion
Question 2
1 / -0

What does a body produce when it vibrates?

A
Heat

B
Sound

C
Light

D
Electricity

Solution

Whenever a body vibrates, it produces sound.
When a glass filled with water is struck with a spoon, sound is produced. At the same time, waves or ripples are created in the water. These ripples show that the glass has vibrated.
Thus, when a body vibrates, it produces sound.
Question 3
1 / -0

Why does a guitarist need to tighten the strings of the guitar to get the correct music and sound ?

A
Tight strings force the entire guitar to vibrate.

B
It is easy to play a guitar with tight strings.

C
Tight strings look good and enhance the look of the guitar.

D
It is not important to tighten the string.

Solution

When a guitarist plucks the strings of a guitar, the strings vibrate and force the entire guitar to vibrate as well. The sound that we hear is produced due to the vibration of the entire instrument. If the strings are not tight enough the entire instrument may not vibrate and the correct sound may not be obtained.
Question 4
1 / -0

When we hit a thin plastic ruler strongly on a bench:

A
the free end of the ruler vibrates

B
the free end of the ruler produces sound

C
even after it stops vibrating it continues to produce sound

D
Both A and B

Solution

When a ruler hits strongly on the bench, the free end vibrates up and down and produces sound.
Question 5
1 / -0

What produces sound?

A
Electric current

B
Friction

C
Force

D
Vibration

Solution

Whenever a body vibrates, it produces sound.
Sound is a type of energy made by vibrations. When an object vibrates, it causes movement in surrounding air molecules. These molecules bump into the molecules close to them, causing them to vibrate as well. This makes them bump into more nearby air molecules.
For example, a school bell rings because the hammer hits the gong and makes it to vibrate. The vibrating gong produces the sound.
Question 6
1 / -0

Why do musical instruments create sound on being played?

A
Because they vibrate.

B
Because they have a secret music player in them.

C
Both A and B

D
Can't say

Solution

When musical instruments are played, the entire instrument vibrates and not just one part. This vibration produces sound. For example, when the strings of a sitar are plucked, the sound that is produced is because of the vibration of the sitar and not only just the strings.
Question 7
1 / -0

A rubber string is tied to a nail on the wall. The rubber string is pulled gently and stretched slightly then:

A
sound is produced

B
rubber string moves up and down

C
the quality of sound changes with the tension of the string

D
all

Solution

Tie one end of a rubber string to a nail on the wall. Pull the rubber string gently to stretch it slightly and pluck the rubber string with your fingers from the middle. The rubber string moves up and down and produces a sound, which is dependant on the tension in the string.
Question 8
1 / -0

What happens when you strike a metal plate with a metal stick?

A
The plate vibrates and produces sound.

B
The plate vibrates and does not produce sound.

C
The plate does not vibrate but produces sound.

D
The plate neither vibrates nor produces sound.

Solution

Metals are sonorous in nature so when a metal plate is struck with a stick, it vibrates, which produces sound.
Question 9
1 / -0

Which of the following musical instruments is a wind instruments?

A
Flute

B
Drums

C
Piano

D
All of these

Solution

Flute is played by blowing air into the instrument. So, it is a blow / wind instrument. Drums are played by hitting on its stretched membrane. So, it is a beat instrument.
Piano is played by hitting stretched strings inside with hammers. So, piano is a string instrument.
Question 10
1 / -0

When a glass filled with water is struck with a stick, ripples are produced in the water. This indicates that

A
the glass is not vibrating.

B
the glass may or may not be vibrating.

C
the glass is vibrating.

D
none of the above is true.

Solution

When a glass filled with water is struck with a stick, it vibrates and this vibration creates ripples in the water. These ripples prove that the glass vibrates. Also, a sound is produced due to the vibration of the glass.

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Re-Attempt Weekly Quiz Competition

Sound Test - 35

Result

Sound Test - 35

Score

-

Rank

-

SHARING IS CARING

Question 1

vibratory motion

rotational motion

translatory motion

circular motion

Question 2

Heat

Sound

Light

Electricity

Solution

Question 3

Tight strings force the entire guitar to vibrate.

It is easy to play a guitar with tight strings.

Tight strings look good and enhance the look of the guitar.

It is not important to tighten the string.

Solution

Question 4

the free end of the ruler vibrates

the free end of the ruler produces sound

even after it stops vibrating it continues to produce sound

Both A and B

Solution

Question 5

Electric current

Friction

Force

Vibration

Solution

Question 6

Because they vibrate.

Because they have a secret music player in them.

Both A and B

Can't say

Solution

Question 7

sound is produced

rubber string moves up and down

the quality of sound changes with the tension of the string

all

Solution

Question 8

The plate vibrates and produces sound.

The plate vibrates and does not produce sound.

The plate does not vibrate but produces sound.

The plate neither vibrates nor produces sound.

Solution

Question 9

Flute

Drums

Piano

All of these

Solution

Question 10

the glass is not vibrating.

the glass may or may not be vibrating.

the glass is vibrating.

none of the above is true.

Solution

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