Sound Waves and Noise MCQs e-Book PDF | Class 7 Science App Download
Class 7 Science Practice Test: MCQs for Exam Prep
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The MCQ: Sound is measured by units that are called; "Sound Waves and Noise" App Download [Free] with answers: hertz (hz), decibels (db), meters (m), and pascal (pa) to learn online classes courses. Solve Sound Waves Quiz Questions, download Apple Book (Free Sample) for elementary school graduation certificate.
Sound is measured by units that are called
20 dB has hundred times more energy than
'Eardrum' bursts at
The level of sound of normal conversation is
Loud noise can
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