Science Crossword Puzzle

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Across
  1. 2. A circuit where components are connected in separate branches.
  2. 3. A closed path that allows electric current to flow.
  3. 4. A component that limits the flow of current in a circuit.
  4. 7. The rate at which energy is transferred or work is done.
  5. 9. The electrical pressure that pushes current through a circuit.
  6. 13. The unit used to measure power (1 joule per second).
  7. 14. A direct connection with very low resistance causing a large current.
  8. 15. A diagram that shows energy input, useful output, and wasted energy.
  9. 18. A material that allows electricity to flow easily, such as copper.
  10. 20. The opposition to the flow of electric current.
Down
  1. 1. The flow of electric charge through a conductor.
  2. 5. A build-up of electric charge that stays in one place.
  3. 6. When energy changes from one form to another.
  4. 8. How well a device converts input energy into useful output energy.
  5. 10. A device made of one or more cells that provides electrical energy.
  6. 11. A material that does not allow electricity to flow easily, such as rubber.
  7. 12. A circuit where the path is broken, so current cannot flow.
  8. 16. A device that converts mechanical energy into electrical energy.
  9. 17. A safety device that melts and breaks the circuit if too much current flows.
  10. 19. The unit used to measure energy.