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Type: Multiple-Choice
Category: Waves and Sound
Level: Grade 8
Tags: NGSS PS4.A
Author: HTAdmin
Created: 2 years ago

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Waves and Sound Question

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Grade 8 Waves and Sound

A sound is produced                             .
  1. through chemical reactions
  2. by the movement of electrons
  3. when an object vibrates
  4. through gravitational forces