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NEW CHAPTER
ElectricityCHAPTER
thethe BIGBIG ideaidea
Moving electric charges transfer energy.
Materials can become electrically charged.
Charges can move from one place to another.
Electric current is a flow of charge.
CHAPTER OUTLINE
5.15.1
5.25.2
5.35.3
CHAPTER RESOURCES
VOCABULARY
KEY CONCEPT CHAPTER HOME
electric field
static charge
induction
electric charge
Materials can become electrically charged.
SECTION OUTLINESECTION OUTLINE
Electric charge is a property of matter.
Electrons have a negative charge.
5.15.1
CHAPTERRESOURCESCHAPTERRESOURCES
VOCABULARY
KEY CONCEPT CHAPTER HOME
electric field
static charge
induction
electric charge
Materials can become electrically charged.
SECTION OUTLINESECTION OUTLINE
Electric charge is a property of matter.
Protons have a positive charge.
5.15.1
CHAPTERRESOURCESCHAPTERRESOURCES
VOCABULARY
KEY CONCEPT CHAPTER HOME
electric field
static charge
induction
electric charge
Materials can become electrically charged.
SECTION OUTLINESECTION OUTLINE
Electric charge is a property of matter.
Unlike charges attract.
5.15.1
CHAPTERRESOURCESCHAPTERRESOURCES
VOCABULARY
KEY CONCEPT CHAPTER HOME
electric field
static charge
induction
electric charge
Materials can become electrically charged.
SECTION OUTLINESECTION OUTLINE
Electric charge is a property of matter.
Like charges repel.
5.15.1
CHAPTERRESOURCESCHAPTERRESOURCES
VOCABULARY
KEY CONCEPT CHAPTER HOME
Materials can become electrically charged.
SECTION OUTLINESECTION OUTLINE
electric field
static charge
induction
electric chargeStatic charges are caused by the movement of electrons, resulting in an imbalance of positive and negative charges.
At first, a balloon and a glass rod each have balanced, neutral charges.
5.15.1
CHAPTERRESOURCESCHAPTERRESOURCES
VOCABULARY
KEY CONCEPT CHAPTER HOME
When they touch, electrons move from the rod to the balloon.
Materials can become electrically charged.
SECTION OUTLINESECTION OUTLINE
electric field
static charge
induction
electric chargeStatic charges are caused by the movement of electrons, resulting in an imbalance of positive and negative charges.
5.15.1
CHAPTERRESOURCESCHAPTERRESOURCES
VOCABULARY
KEY CONCEPT CHAPTER HOME
Materials can become electrically charged.
SECTION OUTLINESECTION OUTLINE
electric field
static charge
induction
electric chargeStatic charges are caused by the movement of electrons, resulting in an imbalance of positive and negative charges.
Afterwards, the balloon has a negative charge, and the rod has a positive charge.
5.15.1
CHAPTERRESOURCESCHAPTERRESOURCES
VOCABULARY
KEY CONCEPT CHAPTER HOME
Materials can become electrically charged.
SECTION OUTLINESECTION OUTLINE
electric field
static charge
induction
electric chargeStatic charges are caused by the movement of electrons, resulting in an imbalance of positive and negative charges.
5.15.1
SIMULATION
Learn more about static electricity.
CHAPTERRESOURCESCHAPTERRESOURCES
VOCABULARY
KEY CONCEPT CHAPTER HOME
Charges can move from one place to another.
SECTIONOUTLINESECTIONOUTLINE
volt
conductor
electric potential
insulator
resistance
ohm
grounding
1. Lightning strikes the lightning rod, because the rod is the path of least resistance.
2. The rod conducts the charge to a conductor cable, which has low resistance.
3. The ground wire conducts the charge into the ground, where it spreads out and becomes harmless.
Charge movement is affected by• electric potential, measured in volts• resistance, measured in ohms
A ground is the path of least resistance.
A conductor has low resistance.An insulator has high resistance.
5.25.2
CHAPTERRESOURCESCHAPTERRESOURCES
VOCABULARY
KEY CONCEPT CHAPTER HOME
Electric current is a flow of charge.
SECTIONOUTLINESECTIONOUTLINE
Electric current is measured in amperes, or amps.
Electrochemical cells produce electric current through chemical reactions.
I = VR
Ohm's law states that current equals voltage divided by resistance.
Current = Resistance
Voltage
electric current
ampere
Ohm’s law
electric cell
5.35.3
CHAPTERRESOURCESCHAPTERRESOURCES
VOCABULARY
KEY CONCEPT CHAPTER HOME
Electric current is a flow of charge.
SECTIONOUTLINESECTIONOUTLINE
Electric current is measured in amperes, or amps.
Electrochemical cells produce electric current through chemical reactions.
I = VR
Ohm's law states that current equals voltage divided by resistance.
Current = Resistance
Voltage
electric current
ampere
Ohm’s law
electric cell
5.35.3
CHAPTERRESOURCESCHAPTERRESOURCES
SIMULATION
See Ohm’s law in action.
VOCABULARY
KEY CONCEPT CHAPTER HOME
I. Materials can become electrically charged.
A. Electric charge is a property of matter.
B. Static charges are caused by the movement of electrons.
C. Technology uses static electricity.
1. Charging by Contact
2. How Materials Affect Static Charging
3. Charging by Induction
4. Charge Polarization
Materials can become electrically charged.
KEY CONCEPTSUMMARYKEY CONCEPTSUMMARY
electric field
static charge
induction
electric charge
5.15.1
CHAPTERRESOURCESCHAPTERRESOURCES
VOCABULARY
KEY CONCEPT CHAPTER HOME
II. Charges can move from one place to another.
A. Static charges have potential energy.
B. Materials affect charge movement.
Charges can move from one place to another.
KEY CONCEPTSUMMARYKEY CONCEPTSUMMARY
volt
conductor
electric potential
insulator
resistance
ohm
grounding
1. Electric Potential Energy
2. Electric Potential
3. Charge Movement
4. Lightning
1. Conductors and Insulators
2. Resistance
3. Superconductors
4. Grounding
5.25.2
CHAPTERRESOURCESCHAPTERRESOURCES
VOCABULARY
KEY CONCEPT CHAPTER HOME
III. Electric current is a flow of charge.
A. Electric charge can flow continuously.
1. Current, Voltage, and Resistance
2. Ohm’s Law
3. Measuring Electricity
B. Electric cells supply electric current.
1. Electrochemical Cells
2. Solar Cells
Electric current is a flow of charge.
KEY CONCEPTSUMMARYKEY CONCEPTSUMMARY
electric current
ampere
Ohm’s law
electric cell
5.35.3
CHAPTERRESOURCESCHAPTERRESOURCES
BACK TO CHAPTER
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