Class 8 Science MCQs - Chapter 12

Sound and Hearing Quiz Questions & Answers PDF Download - 7

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The Sound and hearing Quiz Questions and Answers PDF (sound and hearing Quiz PDF e-Book) download Ch. 12-7 to learn Grade 8 Science Course. Solve Pitch and Loudness MCQs PDF, Sound and Hearing Quiz Questions and Answers to study online certification courses. The Sound and Hearing Quiz App Download: Free learning app for pitch and loudness, hearing sounds test prep for online elementary school classes.

The Quiz: Sounds which are below 20Hz frequencies are called; "Sound and Hearing" App (iOS, Android) with answers: Ultrasound; Infrasound; Mega sound; Micro sound; to study online certification courses. Study Pitch and Loudness MCQ Questions, download Amazon eBook (Free Sample) for online certificate courses.

Sound and Hearing Exam Questions and Answers PDF Download: Test 7

MCQ 31:

Sounds which are below 20Hz frequencies are called

infrasound
ultrasound
mega sound
micro sound

MCQ 32:

A form of energy which is produced by vibrations and can be detected by ears is called

sound
waves
heat
electric current

MCQ 33:

Loudness is measured by

sound level meter
spectrometer
thermostat
thermometer

MCQ 34:

Sound travels at speed of 5960m/s in

air
water
steel
water

MCQ 35:

The regions where molecules are compressed are called

rarefactions
compressions
digressions
progressions

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