Physics W & R

Across

• 1. Part of wave below the central line. (6)
• 4. When the crest of a wave meets the trough of another, they _____ each other out if they are equal. (6)
• 6. The distance a wave travels every second. (5)
• 7. Wave which vibrates along the direction of travel. (12)
• 8. The bending (changing speed) of a wave as it passes through an object. (10)