1. Lightning is caused by a giant build up of _______________
charge

2. Like charges will ____ and unlike charges will _________ with electrical charges.

3. A tiny imbalance of either positive or negative charges on an object is the cause of ______________electricity.

4. In a lightning storm, _____________charged particles accumulate near the top of the cloud and __________charges fall to the bottom

5. A _____________ is a material that can carry electric current.

6. ___________do not allow current to flow easily.
Examples: ___________, glass, and wood.

7. Some materials are in between conductors and insulators
Some materials are in between conductors and insulators. These are called ________________, and an example is ______.

8. Electric current is measured in units called ___________ or ______for short.

9. What do AC and DC stand for?

10. What was the late 19th-century “War of Currents” about?

11. After the war on currents, Edison invented the _______________ which became a household staple item, while Tesla worked on ___________________ for televisions and radios.

12. Electricity flows from the __________________ part of the battery cell to the ________________ part.

13. What is the difference between AC and DC current? (besides the names)

14. To create _________ current, a large, fast spinning magnet is used.

15. Draw a picture of a short circuit.

16. In a _____________ circuit, the voltage is shared among all of the light bulbs, but in a ____________ circuit, the voltage across each pathway equals the supply voltage.

17. Both parallel and series circuits convert electrical energy to ____________, ____________, and ________________.

18. Resistance is measured in ___________.

19. The electrical, potential difference is the ___________________.

20. Electricity can flow if the circuit is _________, but not if it is ____________.

21. The complete symbol for a battery looks like this:

22. The symbol for a switch looks like this:

23. This image illustrates ___________________.

24. These are ____________________________.

25. ___________ are devices that produce electric current by converting chemical or radiant energy into electrical energy.

26. Here is the symbol for a resistor:

27. How does an atom become negatively charged?

28. Using symbols, draw a series circuit with one switch, one light bulb and one battery.

29. Using symbols, draw a parallel circuit with one switch, two light bulbs and one battery.

30. The amount of charges flowing past a point per second is the _________________.

31. What happens to the other light bulbs if a bulb burns out in a parallel circuit?

32. What type of circuit leaves a shorter battery life?

33. An ammeter uses amps to measure the _____________________ .

34. What type of current is used for the electricity in our homes?

35. What is the subatomic particle that carries a negative charge?

36. Who are the three important electricity guys? (first AND last names!)