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

Class 7 Science Exam MCQs – Practice Test 4 (Chapter 23)

Sound Waves Notes Questions with Answers PDF Download – Test 4

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Study Sound waves Notes Questions and Answers PDF for science online education access. Download the Sound Waves Quiz Answers PDF e-Book, Ch. 23-4 to study Class 7 Science Course. Practice Ultrasound MCQ PDF, Sound Waves Quiz Questions and Answers for science online education access. Download the Sound Waves Notes App: Free Class 7 Science Learning App to ultrasound, musical instruments, speed of sound, sound waves and noise test prep for science competency learning systems.

Free Sound Waves Learning App Download: Three main types of musical instruments are; MCQ with answers: drum, guitar and piano, guitar, violin and piano, stringed instrument, wind instrument and percussion instrument, and stringed instrument, wind instrument and beat n bass instrument. Practice Ultrasound MCQ Questions, download Kobo e-Book (Free Chapter) to strengthen learning efficiency online.

Sound Waves MCQs – Practice Test 4 PDF Download

MCQ 16: 'Ultrasound' is a reflection of:

  1. soft tissues only
  2. hard tissues only
  3. both soft and hard tissues
  4. hard muscles only

MCQ 17: Three main types of musical instruments are:

  1. guitar, violin and piano
  2. drum, guitar and piano
  3. stringed instrument, wind instrument and percussion instrument
  4. stringed instrument, wind instrument and beat n bass instrument

MCQ 18: Sound loses more energy in:

  1. air
  2. vacuum
  3. liquid
  4. solid

MCQ 19: The note also depends on:

  1. diameter of the drum
  2. thickness of string
  3. tension of string
  4. distance of wind holes

MCQ 20: The level of sound of normal conversation is:

  1. 10 dB
  2. 20 dB
  3. 50 dB
  4. 60 dB

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