G8 science (Physics) : electro magnetism / motor

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Across
  1. 3. (振膜)The vibrating part of a loudspeaker that produces sound.
  2. 7. (力) A push or pull caused by interaction (e.g., motor effect).
  3. 9. (交流电)Alternating current (changes direction periodically).
  4. 10. (反转)To change direction (e.g., current reverses force direction).
  5. 11. (材料)Substance used to make objects (e.g., copper wire).
  6. 13. (向前)Movement forward (e.g., coil moves back and forth).
  7. 14. (旋转)Circular motion (e.g., motor spins).
  8. 16. (磁场)The area where magnetic forces act.
  9. 17. (振动)Rapid back-and-forth movement (e.g., loudspeaker cone).
  10. 18. (磁性的)Having properties of a magnet.
  11. 20. (线圈)A wound wire that creates a magnetic field when current passes.
Down
  1. 1. (电流)The flow of electric charge (AC/DC).
  2. 2. (铜)A conductive metal used in wires.
  3. 4. (方向)The path of movement or force.
  4. 5. (偏转)Changed direction (e.g., compass needle near a current).
  5. 6. (更强的)More powerful (e.g., stronger magnet).
  6. 8. (指南针)A device that shows direction using Earth’s magnetic field.
  7. 11. (电动机)A device that converts electrical energy to motion.
  8. 12. (螺线管A coiled wire that acts as a magnet when current flows.
  9. 15. (增加)To make larger (e.g., current increases magnetic strength).
  10. 19. (指针)A thin pointer (e.g., in a compass).