Class 7 Science MCQs – Certification Test 807

Sound Waves and Echoes MCQ (Question 807) – App & e-Book Download

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MCQ 807: Ships send a small:

pulse to the sea bed
vibration to the tower
piece of food to fish
beam of sound to check the depth

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Sound Waves and Echoes MCQ App & e-Book – Class 7 Science Textbook Tests

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