Class 7 Science MCQs - Chapter 23

Sound Waves Trivia Questions & Answers PDF Download - 4

Books:

Apps:

The Sound waves Trivia Questions and Answers PDF (sound waves Quiz Answers PDF e-Book) download Ch. 23-4 to study Grade 7 Science Course. Practice Ultrasound MCQ PDF, Sound Waves Quiz Questions and Answers to study online homeschool courses. The Sound Waves Trivia App Download: Free certification app for ultrasound, musical instruments, speed of sound, sound waves and noise test prep for online elementary school classes.

The Quiz: 'Ultrasound' is a reflection of; "Sound Waves" App APK Download with answers: Hard tissues only; Soft tissues only; Both soft and hard tissues; Hard muscles only; to study online homeschool courses. Practice Ultrasound MCQ Questions, download Kindle eBook (Free Sample) for online education.

Sound Waves Test Questions and Answers PDF Download: MCQ 4

MCQ 16:

'Ultrasound' is a reflection of

soft tissues only
hard tissues only
both soft and hard tissues
hard muscles only

MCQ 17:

Three main types of musical instruments are

guitar, violin and piano
drum, guitar and piano
stringed instrument, wind instrument and percussion instrument
stringed instrument, wind instrument and beat n bass instrument

MCQ 18:

Sound loses more energy in

air
vacuum
liquid
solid

MCQ 19:

The note also depends on

diameter of the drum
thickness of string
tension of string
distance of wind holes

MCQ 20:

The level of sound of normal conversation is

10 dB
20 dB
50 dB
60 dB

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