Sound Waves MCQs App | Class 7 Science MCQs e-Book PDF Download | 9
Class 7 Science MCQs (Grade 7) From Textbook

Class 7 Science MCQs – Practice Test 9 (Chapter 23)

Sound Waves MCQs with Answers PDF – Download Test 9

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Learn Sound waves Multiple Choice Questions (MCQs) with Answers PDF to strengthen learning efficiency online. Download the Sound Waves MCQs PDF e-Book, Ch. 23-9 to study Class 7 Science Course. Learn Sound Waves Quiz Questions and Answers for STEM middle school education. Download the Sound Waves MCQs App: Free Class 7 Science App to sound waves and noise, musics and musical sound, sound absorption, sound waves and echoes, musical instruments test prep for science digital education platforms.

The "Sound Waves MCQs" App Download: Mixture of high and low sounds is called a; MCQ with answers: bass effect, rhythm, beat effect, and wow effect. Solve Sound Waves and Noise MCQ Questions, download Google e-Book (Free Chapter) to strengthen learning efficiency online.

Sound Waves MCQs PDF Download – Practice Test 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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