Class 7 Courses

Chapter 23: Class 7 Science Exam Tests

Class 7 Science MCQs - Chapter 23

Sound Waves Quiz Questions & Answers PDF Download - 27

The Sound waves Quiz Questions and Answers PDF (sound waves Quiz PDF e-Book) download Ch. 23-27 to learn Grade 7 Science Course. Solve Musical Instruments MCQs PDF, Sound Waves Quiz Questions and Answers for homeschool certification courses. The Sound Waves Quiz App Download: Free learning app for musical instruments, musics and musical sound, ultrasound, vibrations and sound waves, speed of sound test prep for online school courses.

The Quiz: Two similar string instruments are; "Sound Waves" App (iOS, Android) with answers: Piano and violin; Piano and guitar; Guitar and violin; Harp and piano; for homeschool certification courses. Study Musical Instruments MCQ Questions, download Amazon eBook (Free Sample) for online elementary school classes.

Sound Waves Exam Questions and Answers PDF Download: Test 27

MCQ 131:

Two similar string instruments are

  1. piano and guitar
  2. piano and violin
  3. guitar and violin
  4. harp and piano
MCQ 132:

Notes are put together to produce a pleasing sound known as

  1. noise
  2. pitch
  3. music
  4. phase
MCQ 133:

Sounds with a high frequency which a human ear can detect are known as

  1. infrasound
  2. ultrasounds
  3. high sounds
  4. low sounds
MCQ 134:

When the hand bell stimulates air particles,

  1. temperature increases
  2. pressure increases in the air
  3. both temperature and pressure decreases in the air
  4. humidity of air keeps on increasing and decreasing
MCQ 135:

To avoid noise from the surroundings

  1. soft curtains should be used
  2. hard curtains should be used
  3. glass windows should be used
  4. vacuum windows should be used

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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)

8th Grade Science App (Android & iOS)

8th Grade Science App (Android & iOS)

Earth Science App (Android & iOS)

Earth Science App (iOS & Android)