Electricity and Electric Current

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Across
  1. 2. opposition of a material to the passage of electric charges through it
  2. 5. if one thing repels another, or if two things repel each other, an electrical or magnetic force pushes them apart
  3. 11. ​a flash, or several flashes, of very bright light in the sky caused by electricity
  4. 12. a substance that allows electricity or heat to pass along it or through it
  5. 13. wire covered in plastic that carries electricity
  6. 14. a unit for measuring the force of an electric force
  7. 17. the glass part that fits into an electric lamp, etc. to give light when it is switched on
  8. 20. electricity that gathers on or in an object that is not a conductor of electricity
  9. 21. a very small piece of matter (= a substance) that carries no electric charge and that forms part of the nucleus (= central part) of an atom
  10. 23. a very small piece of matter (= a substance) with a negative electric charge, found in all atoms
  11. 27. a material that resists the movement of electric charge
  12. 28. a small flash of light produced by an electric current
  13. 29. a form of energy from charged elementary particles, usually supplied as electric current through cables, wires, etc. for lighting, heating, driving machines, etc.
  14. 30. an atom or a molecule with a positive or negative electric charge caused by its losing or gaining one or more electrons
  15. 31. the smallest particle of a chemical element that can exist
Down
  1. 1. a situation in which different things exist in equal, correct or good amounts
  2. 3. the steady and continuous movement of something/somebody in one direction
  3. 4. a sudden flow of electricity through a part of the body, causing pain and sometimes death
  4. 6. electricity that moves from one place to another
  5. 7. an electric current that changes its direction at regular intervals many times a second
  6. 8. a unit for measuring electrical resistance
  7. 9. thick wire that carries electricity
  8. 10. to add dirty or harmful substances to land, air, water, etc. so that it is no longer pleasant or safe to use
  9. 15. to press two surfaces against each other and move them backwards and forwards; to be pressed together and move in this way
  10. 16. the unit for measuring the intensity of an electric current
  11. 18. an electric current that flows in one direction only
  12. 19. the complete path of wires and equipment along which an electric current flows
  13. 22. the part of an atom that contains most of its mass and that carries a positive electric charge
  14. 24. something that is wrong or not perfect; something that is wrong with a machine or system that stops it from working correctly
  15. 25. the amount of electricity that is put into a battery or carried by a substance
  16. 26. a very small piece of matter (= a substance) with a positive electric charge that forms part of the nucleus (= central part) of an atom