Waves 0.0 / 5 ? PhysicsWavesGCSEAQA Created by: jackggCreated on: 24-09-13 19:58 34215 Across 1. a wave that travels perpendicular to the the direction of energy is... (12) 5. sound travels in ... (5) Down 2. a box used t (3, 3) 3. a wave that travels parallel to the direction of energy is... (10) 4. an area that contains no particles (6)
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