Chapter 23: Sound Waves - Science Mcqs for Grade 7

1.

As compare to air, sound travels faster in

A. liquids

B. gases

C. vacuum

D. fluids

Answer & Solution Discuss in Board

2.

Sounds of vehicles, aircrafts and machines are called

A. artificial sounds

B. natural sounds

C. noise

D. normal sounds

Answer & Solution Discuss in Board

3.

Large empty room often sounds

A. full

B. hollow

C. noisy

D. repeating

Answer & Solution Discuss in Board

4.

For communication astronauts use radio because

A. sound travels at very high speed in vacuum

B. sound does not travel in vacuum

C. vacuum repels sounds

D. sound energy turns into light in vacuum

Answer & Solution Discuss in Board

5.

In concert halls, soft materials and carpets are used to

A. increase sound waves

B. absorb sound waves

C. retract sound waves

D. refract sound waves

Answer & Solution Discuss in Board

6.

The pitch of the note depends upon the

A. tension on string

B. diameter of wind hole

C. tension on drum surface

D. diameter of drum surface

Answer & Solution Discuss in Board

7.

The caliber of instrumental note depends on the

A. depth of drum

B. string length

C. length of wind holes

D. radius of wind holes

Answer & Solution Discuss in Board

8.

One of the vibrations of the string makes

A. pitch of the instrument

B. pitch of the note

C. scale of the note

D. pitch of the scale

Answer & Solution Discuss in Board

9.

Sound waves are converted by

A. speakers

B. computers

C. microphones

D. monitors

Answer & Solution Discuss in Board

10.

Sound is measured by units that are called

A. Hertz (Hz)

B. Decibels (dB)

C. Meters (m)

D. Pascal (Pa)

Answer & Solution Discuss in Board

Practice MCQ Questions and answers on Chapter 23: Sound Waves - Science Mcqs for Grade 7

1. As compare to air, sound travels faster in

Answer & Solution

2. Sounds of vehicles, aircrafts and machines are called

Answer & Solution

3. Large empty room often sounds

Answer & Solution

4. For communication astronauts use radio because

Answer & Solution

5. In concert halls, soft materials and carpets are used to

Answer & Solution

6. The pitch of the note depends upon the

Answer & Solution

7. The caliber of instrumental note depends on the

Answer & Solution

8. One of the vibrations of the string makes

Answer & Solution

9. Sound waves are converted by

Answer & Solution

10. Sound is measured by units that are called

Answer & Solution

Read More Section(Science Mcqs)

1.

As compare to air, sound travels faster in

2.

Sounds of vehicles, aircrafts and machines are called

3.

Large empty room often sounds

4.

For communication astronauts use radio because

5.

In concert halls, soft materials and carpets are used to

6.

The pitch of the note depends upon the

7.

The caliber of instrumental note depends on the

8.

One of the vibrations of the string makes

9.

Sound waves are converted by

10.

Sound is measured by units that are called