Download CHAPTER 16 Electric Forces and Fields

CHAPTER 16 Electric Forces and Fields
Chapter Opener
__ Tapping Prior Knowledge, TE Review previously learned concepts and check for
preconceptions about the chapter content.
__ Discovery Lab, Charges and Electrostatics
SECTION 1 Electric Charge
OBJECTIVES
1. Understand the basic properties of electric charge.
2. Differentiate between conductors and insulators.
3. Distinguish between charging by contact, charging by induction, and
charging by polarization.
FOCUS (5 MINUTES)
__ Overview Review the objectives listed in the Student Edition.
MOTIVATE (5 MINUTES)
__ p. 558, TE Students perform a number of different experiments to learn about
electrostatics.
__ Visual Strategy, Figure 1, TE
TEACH (70 MINUTES)
__ Power Point
__ Demonstration, Effects of Charge, TE
__ Visual Strategy, Figure 3, TE
__ Conceptual Challenge, p. 561, SE
__ Demonstration, Jumping Spices, TE
__ Quick Lab, Polarization, SE
__ Datasheet, Polarization
__ Visual Strategy, Figure 4, TE
__ Demonstration, Polarization, TE
__ Skills Practice Lab, Electrostatics, SE
CLOSE (10 MINUTES)
__ Section Review
__ Study Guide, Electric Charge
__ Section Quiz
OTHER RESOURCE OPTIONS
__ SciLinks, Online Students can visit www.scilinks.org to find internet resources related to
the chapter content. Topic: Electric Charge SciLinks Code: HF60470
__ SciLinks, Online Students can visit www.scilinks.org to find internet resources related to
the chapter content. Topic: Conductors and Insulators SciLinks Code: HF60341
SECTION 2 Electric Force
OBJECTIVES
1. Calculate electric force using Coulomb’s law.
2. Compare electric force with gravitational force.
3. Apply the superposition principle to find the resultant force on a charge and
to find the position at which the net force on a charge is zero.
FOCUS (5 MINUTES)
__ Overview Review the objectives listed in the Student Edition.
MOTIVATE (5 MINUTES)
__ Demonstration, Electric Force, TE
TEACH (70 MINUTES)
__ Power Point
__ Sample Set A, Coulomb’s Law, SE
__ Classroom Practice, Coulomb’s Law, SE
__ Conceptual Challenge, p. 566, SE
__ Sample Set B, The Superposition Principle, SE This sample and practice problem set
covers the superposition principle. (ADVANCED STUDENTS)
__ Classroom Practice, The Superposition Principle, SE Use this problem as a teamwork
exercise or for demonstration at the board or on an overhead projector. (ADVANCED
STUDENTS)
__ Sample Set C, Equilibrium, SE
__ Classroom Practice, Equilibrium, SE
CLOSE (10 MINUTES)
__ Section Review
__ Study Guide, Electric Force
__ Section Quiz
OTHER RESOURCE OPTIONS
__ Problem Workbook, Sample Set A: Coulomb’s Law
__ Problem Bank, Sample Set A: Coulomb’s Law
__ Problem Workbook, Sample Set B: The Superposition Principle, ANC This worksheet
provides an additional example problem and several practice problems that cover the
superposition principle. (ADVANCED STUDENTS)
__ Problem Bank, Sample Set B: The Superposition Principle, OSP This worksheet
provides a third example problem and several practice problems that cover the
superposition principle. (ADVANCED STUDENTS)
__ Problem Workbook, Sample Set C: Equilibrium
__ Problem Bank, Sample Set C: Equilibrium
__ SciLinks, Online Students can visit www.scilinks.org to find internet resources related to
the chapter content. Topic: Coulomb’s Law SciLinks Code: HF60361
__ SciLinks, Online Students can visit www.scilinks.org to find internet resources related to
the chapter content. Topic: Van de Graaff Generator SciLinks Code: HF61592
SECTION 3 The Electric Field
OBJECTIVES
1. Calculate electric field strength.
2. Draw and interpret electric field lines.
3. Identify the four properties associated with a conductor in electrostatic
equilibrium.
FOCUS (5 MINUTES)
__ Overview Review the objectives listed in the Student Edition.
MOTIVATE (5 MINUTES)
__ Visual Strategy, Figure 7, TE
TEACH (45 MINUTES)
__ Power Point
__ Demonstration, Electric Field Strength, TE This demonstration uses an electroscope, a
demonstration Leyden jar, and a rubber rod and fur to show the dependence of field
strength on charge. (ADVANCED STUDENTS)
__ Sample Set D, Electric Field Strength, SE
__ Classroom Practice, Electric Field Strength, TE
__ Visual Strategy, Figures 10 and 11, TE
__ Demonstration, Charge Accumulation, TE
CLOSE (10 MINUTES)
__ Section Review
__ Study Guide, The Electric Field
__ Section Quiz
OTHER RESOURCE OPTIONS
__ Integrating Astronomy, Ion Propulsion in Deep Space 1, Online Students can visit
my.hrw.com and enter the keyword HF6ELFX to find this activity.
__ Problem Workbook, Sample Set D: Electric Field Strength
__ Problem Bank, Sample Set D: Electric Field Strength
__ Invention Lab, Levitating Toys, ANC Students manipulate electrostatic field forces to
cause objects to levitate. (ADVANCED STUDENTS)
__ SciLinks, Online Students can visit www.scilinks.org to find internet resources related to
the chapter content. Topic: Microwaves SciLinks Code: HF60959
END OF CHAPTER REVIEW AND ASSESSMENT
(45 minutes)
__ p. 580, SE This page summarizes the vocabulary terms and key concepts of the chapter.
__ pp. 581–585, SE Students review the chapter material with review questions, conceptual
questions, practice problems, and a mixed review section.
__ Alternative Assessment, p. 585, SE These projects challenge students to apply and
extend concepts that they have learned in the chapter. (ADVANCED STUDENTS)
__ Graphing Calculator Practice, p. 584, SE Students program their graphing calculators to
create a graph of force versus distance for two positive charges in order to determine the
forces involved in several situations.
__ Standardized Test Prep, pp. 586–587, SE
__ Appendix D: Equations, p. 861, SE
__ Appendix I: Additional Problems, pp. 891–892, SE
__ Study Guide, Mixed Review
__ Chapter Test A