Physical Science Chapter 15 Electricity

Vocabulary Words	Objective Questions
15-1 Electric Charge	page 440
ion static charge electric force electric field insulator conductor electric discharge proton neutron electron	What are the two types of charges? Draw an atom and label the parts. When does an object become positively charged? When does an object become negatively charged? What statement can be made about positive and negative charges? What is the difference between a conductor and an insulator? What is an induced charge? Why and how do you ground something?
15-2 Electric Current	page 447
electric current circuit voltage resistance	Describe or draw a simple circuit. What direction does electric current flow? What is a battery? Why do batteries die? What is the relationship between resistance and thermal energy? Is resistance ever beneficial? Explain. What three things does resistance depend on?
15-3 Electric Circuits	page 452
Ohm's Law series circuit parallel circuit electric power	What are the two kinds of circuits? Draw a series circuit. Draw a parallel circuit. What purpose do fuses and breakers serve? How do electric companies charge for power? How can you avoid being shocked by electricity? What determines whether you live through an electric shock? How can you avoid being hit by lightning?

*Science and Society:  Fire in the Forest  page 462-463