Electrical Principles and Technologies Review Crossword

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Across
  1. 4. These have a wire that triggers a spring mechanism that turns the switch off
  2. 10. Can be used to: control the amount of current in a circuit, produce light, produce heat
  3. 12. Current that flows in only one direction. Example is a battery
  4. 13. Energy cannot be ________ or destroyed only transformed from one form to another
  5. 14. Type of resource that cannot be replaced as it is used up
  6. 15. These are used to show components and connections clearly in circuit drawings
  7. 16. Does not flow but rather it may jump from one object to another in the form of electrical discharge
  8. 20. Rechargeable cells are known as this type of cell
  9. 22. These attract each other
  10. 26. Used to remove impurities from metals
  11. 27. There is only one pathway for the current, if this pathway is interrupted the whole circuit cannot function
  12. 28. Is the rate at which a device converts energy
  13. 30. Heat from the Earth's core
  14. 33. Measurement for the rate which an electrical current flows
  15. 37. Coating a cheaper metal with a thin layer of silver of gold, often done to protect metals from corrosion
  16. 39. Substances that allow their electrons to flow when electricity is applied
  17. 40. Using resources at a rate that can be maintained indefinitely
  18. 41. Device that concerts electrical energy to another form of energy
  19. 42. Usually the best method for turning electricity on and off in a circuit
Down
  1. 1. The easiest way to increase efficiency is to decrease
  2. 2. Contain a thin piece of metal that is specially designed to melt if too much current passes through it
  3. 3. Power produced by capturing the energy of falling water
  4. 5. Used in pacemakers
  5. 6. If you increase the voltage in a circuit, the current also _____________
  6. 7. Name for garbage that decomposes and produces combustible gases that can be used as fuel
  7. 8. Have a separate current path for each section
  8. 9. Connecting cells together creates these
  9. 11. Current does not flow easily through these
  10. 17. Type of cell that produce electricity from chemical reactions that cannot be reversed
  11. 18. Coverts Electrical energy to Mechanical
  12. 19. Several different measuring circuits mounted in the same case
  13. 21. For any given voltage, current ________________ if you add resistance
  14. 23. These have no resistance to electron flow
  15. 24. Measure electric current
  16. 25. Also called Potential Difference
  17. 29. Ratio of useful energy that a device produces verses the amount of energy that went into the electrical device
  18. 31. To prevent heat loss you should add
  19. 32. The resistance is measured in _______
  20. 34. Ability to do work
  21. 35. Allows you to change the amount of resistance in a circuit by turning/ pushing on a switch
  22. 36. Commonly used unit of electrical energy, equal to a power consumption of 1000 W for one hour
  23. 38. Current that flows back and forth 60 times per second
  24. 40. Another name for curcuit drawings