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