Sound Waves MCQs App Download - Grade 7 Science e-Book
Class 7 Science MCQs - Chapter 23
Apps:
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The MCQ: The sound of a whistle is "Sound Waves" App Download [Free] with answers: high pitched, low pitched, low pitched with short wavelengths, and high pitched with long wavelengths to learn online courses. Solve Frequency and Pitch MCQ Questions, download Google e-Book (Free Sample) for online degree programs.
The sound of a whistle is
The depth of the sea or ocean is calculated by a
Bats produce sounds with
A reflected sound is known as
Rapid backward and forward movements are known as
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