Science electricity mind map

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My 8 Questions about electricity 

  • why is electricity harmful for it  to circuit our bones?
  • Does electricity travel in one direction? if so, why?
  • Why do car tires prevent lightning from hitting the car?
  • what is electricitys best conductor?
  • why does electricity “happen” very fast?
  • how was electricity discovered?
  • Why does electricity  not have certain colours?
  • how long can a light be open in a series circuit?