Class 7 Courses

Chapter 23: Class 7 Science Exam Tests

Class 7 Science MCQs - Chapter 23

Sound Waves Multiple Choice Questions (MCQs) PDF Download - 9

The Sound waves Multiple Choice Questions (MCQs) with Answers PDF (sound waves MCQs PDF e-Book) download Ch. 23-9 to study Grade 7 Science Course. Learn Sound Waves Quiz Questions and Answers to study distance learning courses. The Sound Waves MCQs App Download: Free learning app for sound waves and noise, musics and musical sound, sound absorption, sound waves and echoes, musical instruments test prep for free online classes.

The MCQ: Measure of decibel starts from; "Sound Waves" App Download (Free) with answers: 20; 0; 20000; 10; to study distance learning courses. Solve Sound Waves and Noise MCQ Questions, download Google eBook (Free Sample) for online school classes.

Sound Waves MCQs with Answers PDF Download: Quiz 9

MCQ 41:

Measure of decibel starts from

  1. 0
  2. 20
  3. 20000
  4. 10
MCQ 42:

The mixture of high and low sounds is called a

  1. rhythm
  2. bass effect
  3. beat effect
  4. wow effect
MCQ 43:

Echoes are formed when sound

  1. strikes a wall and reflects back
  2. strikes a wall and is absorbed
  3. hits the eardrum repeatedly
  4. breaks
MCQ 44:

The use of echo to measure distance is known as

  1. echo destination
  2. echolocation
  3. echo displacement
  4. echo dictation
MCQ 45:

In a flute, the length of air cutting through the holes is changed by

  1. changing length
  2. changing valves
  3. fingers
  4. sealers

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Sound Waves App (Android & iOS)

Sound Waves App (Android & iOS)

7th Grade Science App (Android & iOS)

7th Grade Science App (iOS & Android)

6th Grade Science App (Android & iOS)

6th Grade Science App (Android & iOS)

8th Grade Science App (Android & iOS)

8th Grade Science App (iOS & Android)