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