Science revision

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Across
  1. 1. it is a battery that can be caried around
  2. 5. a form of electricity created by friction
  3. 7. a type of electrical current that flows
Down
  1. 2. a type of electrical current
  2. 3. he invented the light bulb
  3. 4. a very big big big noob
  4. 6. electricity flows through this to light things