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Lesson Plan Chapter 16 Elec Fields/Forces 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, ANC Students discover the electrical properties of metallic and nonmetallic objects, construct an lectroscope and investigate how it works, and observe forces between charged and uncharged objects. (BASIC) __ Visual Concepts CD-ROM This CD-ROM consists of multimedia presentations of core physics concepts. (BASIC) SECTION 1 Electric Charge PACING Regular Schedule: Block Schedule: with lab(s): 2 days with lab(s): 1 days without lab(s): 1 days without lab(s): 0.5 days 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. NATIONAL SCIENCE EDUCATION STANDARDS UCP 1: Systems, order, and organization UCP 2: Evidence, models, and explanation UCP 3: Change, consistency, and measurements UCP 5: Form and function SAI 1: Abilities to do scientific inquiry SAI 2: Understanding about scientific inquiry ST 1: Abilities of technological design ST 2: Understanding about science and technology HNS 1: Science as a human endeavor HNS 2: Nature of science HNS 3: History of science SPSP 5: Science and technology in society CHAPTER 16 Lesson Plan Chapter 16 Elec Fields/Forces PS6d: In some materials, such as metals, electrons flow easily, whereas in insulating materials such as glass they can hardly flow at all. Semiconducting materials have intermediate behavior. At low temperatures some materials become superconductors and offer no resistance to the flow of electrons. FOCUS (5 MINUTES) __ Overview Review the objectives listed in the Student Edition. (GENERAL) MOTIVATE (5 MINUTES) __ Teaching Tip, p. 558, TE Students perform a number of different experiments to learn about electrostatics. (GENERAL) __ Visual Strategy, Figure 1, TE Students explain why it is inferred that an electric force is operating on the balloons in the photo. (BASIC) TEACH (70 MINUTES) __ PowerNotes® Resources Use the customizable presentation to help students master the concepts in this section. (GENERAL) __ Transparency 86, The Millikan Experiment This transparency provides a schematic view of the apparatus used by Millikan in his oil-drop experiment. __ Transparency 87, Charging by Induction This transparency illustrates the redistribution of charges when a charged rubber rod is brought near a metal sphere. __ Transparency 88, Electrical Polarization This transparency illustrates how a surface charge can be induced on insulators by polarization. __ Demonstration, Effects of Charge, TE This demonstration shows students two kinds of charge by use of a pith ball. (BASIC) __ Visual Strategy, Figure 3, TE Students answer questions about the set-up of Millikan’s experiment. (GENERAL) __ Conceptual Challenge, p. 561, SE These conceptual questions challenge students to apply the section content to real-world applications. (GENERAL) __ Demonstration, Jumping Spices, TE This demonstration uses spices on an overhead projector to show charging by contact and charging by induction. (GENERAL) __ Quick Lab, Polarization, SE Students observe how a charged comb can affect a flowing stream of water. (GENERAL) __ Datasheet, Polarization Students use the datasheet to complete the in-text QuickLab (GENERAL) __ Visual Strategy, Figure 4, TE Students describe why electrons leave the sphere shown in the figure. (BASIC) __ Demonstration, Polarization, TE This demonstration shows the effects of polarization using a rubber rod, fur, and paper. (GENERAL) __ Skills Practice Lab, Electrostatics, SE Students use an electroscope and other materials to analyze the properties of static electricity and determine the number of different kinds CHAPTER 16 Lesson Plan Chapter 16 Elec Fields/Forces of electric charge. (GENERAL) CLOSE (10 MINUTES) __ Section Review, SE Students answer review questions, critical-thinking questions, and interpreting-graphics questions that assess their understanding of the section objectives. (GENERAL) __ Study Guide, Electric Charge, ANC Use this worksheet to review the main concepts presented in the section. (GENERAL) __ Section Quiz, ANC Use this quiz to assess students' understanding of the section. (BASIC) OTHER RESOURCE OPTIONS __ Holt Online Learning Students can access interactive problem-solving help and active visual concept development with the Holt Physics Online Edition available at my.hrw.com. __ 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 CHAPTER 16 Lesson Plan Chapter 16 Elec Fields/Forces SECTION 2 Electric Force PACING Regular Schedule: Block Schedule: with lab(s): N/A days with lab(s): N/A days without lab(s): 2 days without lab(s): 1 days 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. NATIONAL SCIENCE EDUCATION STANDARDS UCP 1: Systems, order, and organization UCP 2: Evidence, models, and explanation UCP 3: Change, consistency, and measurements UCP 4: Evolution and equilibrium UCP 5: Form and function ST 2: Understanding about science and technology HNS 1: Science as a human endeavor HNS 3: History of science SPSP 5: Science and technology in society PS4c: The electric force is a universal force that exists between any two charged objects. Opposite charges attract while like charges repel. The strength of the force is proportional to the charges, and, as with gravitation, inversely proportional to the square of the distance between them. FOCUS (5 MINUTES) __ Overview Review the objectives listed in the Student Edition. (GENERAL) MOTIVATE (5 MINUTES) __ Demonstration, Electric Force, TE This demonstration uses a balloon and a water faucet to help students understand how electric force depends on distance. (GENERAL) TEACH (70 MINUTES) __ PowerNotes® Resources Use the customizable presentation to help students master the concepts in this section. (GENERAL) CHAPTER 16 Lesson Plan Chapter 16 Elec Fields/Forces __ Sample Set A, Coulomb’s Law, SE This sample and practice problem set covers Coulomb’s law. (GENERAL) __ Classroom Practice, Coulomb’s Law, SE Use this problem as a teamwork exercise or for demonstration at the board or on an overhead projector. (GENERAL) __ Conceptual Challenge, p. 566, SE These conceptual questions challenge students to apply the section content to real-world applications. (BASIC) __ Sample Set B, The Superposition Principle, SE This sample and practice problem set covers the superposition principle. (ADVANCED) __ 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) __ Sample Set C, Equilibrium, SE This sample and practice problem set covers equilibrium. (GENERAL) __ Classroom Practice, Equilibrium, SE Use this problem as a teamwork exercise or for demonstration at the board or on an overhead projector. (GENERAL) CLOSE (10 MINUTES) __ Section Review, SE Students answer review questions, critical-thinking questions, and interpreting-graphics questions that assess their understanding of the section objectives. (GENERAL) __ Study Guide, Electric Force, ANC Use this worksheet to review the main concepts presented in the section. (GENERAL) __ Section Quiz, ANC Use this quiz to assess students' understanding of the section. (BASIC) OTHER RESOURCE OPTIONS __ Holt Online Learning Students can access interactive problem-solving help and active visual concept development with the Holt Physics Online Edition available at my.hrw.com. __ Problem Workbook, Sample Set A: Coulomb’s Law, ANC This worksheet provides an additional example problem and several practice problems that cover Coulomb’s law. (GENERAL) __ Problem Bank, Sample Set A: Coulomb’s Law, OSP This worksheet provides a third example problem and several practice problems that cover Coulomb’s law. (GENERAL) __ 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) __ 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) __ Problem Workbook, Sample Set C: Equilibrium, ANC This worksheet provides an additional example problem and several practice problems that cover equilibrium. CHAPTER 16 Lesson Plan Chapter 16 Elec Fields/Forces (GENERAL) __ Problem Bank, Sample Set C: Equilibrium, OSP This worksheet provides a third example problem and several practice problems that cover equilibrium. (GENERAL) __ 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 CHAPTER 16 Lesson Plan Chapter 16 Elec Fields/Forces SECTION 3 The Electric Field PACING Regular Schedule: Block Schedule: with lab(s): N/A days with lab(s): N/A days without lab(s): 1 days without lab(s): 0.5 days 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. NATIONAL SCIENCE EDUCATION STANDARDS UCP 1: Systems, order, and organization UCP 2: Evidence, models, and explanation UCP 3: Change, consistency, and measurements UCP 4: Evolution and equilibrium UCP 5: Form and function SAI 1: Abilities to do scientific inquiry SAI 2: Understanding about scientific inquiry ST 1: Abilities of technological design ST 2: Understanding about science and technology SPSP 5: Science and technology in society FOCUS (5 MINUTES) __ Overview Review the objectives listed in the Student Edition. (GENERAL) MOTIVATE (5 MINUTES) __ Visual Strategy, Figure 7, TE Students decide how a test charge at a given location would change the electric field vector at that point. (BASIC) TEACH (45 MINUTES) __ PowerNotes® Resources Use the customizable presentation to help students master the concepts in this section. (GENERAL) __ Transparency Master 55A, Electric Field Lines for a Single Charge This transparency master shows some representative electric field lines for both positive and negative point charges. CHAPTER 16 Lesson Plan Chapter 16 Elec Fields/Forces __ Transparency Master 56A, Electric Field Lines for Opposite Charges This transparency master shows the electric field lines for two point charges of equal magnitudes but opposite signs. __ Transparency Master 57A, Electric Field Lines for Two Like Charges This transparency master shows the electric field lines in the vicinity of two equal positive point charges. __ 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) __ Sample Set D, Electric Field Strength, SE This sample and practice problem set covers electric field strength. (ADVANCED) __ Classroom Practice, Electric Field Strength, TE Use these problems as a teamwork exercise or for demonstration at the board or on an overhead projector. (ADVANCED) __ Visual Strategy, Figures 10 and 11, TE Students examine the figures and answer questions about the field lines shown. (GENERAL) __ Demonstration, Charge Accumulation, TE This demonstration uses a Van de Graaff generator to provide a visual demonstration of charge accumulation. (ADVANCED) CLOSE (10 MINUTES) __ Section Review, SE Students answer review questions, critical-thinking questions, and interpreting-graphics questions that assess their understanding of the section objectives. (ADVANCED) __ Study Guide, The Electric Field, ANC Use this worksheet to review the main concepts presented in the section. (ADVANCED) __ Section Quiz, ANC Use this quiz to assess students' understanding of the section. (GENERAL) OTHER RESOURCE OPTIONS __ Holt Online Learning Students can access interactive problem-solving help and active visual concept development with the Holt Physics Online Edition available at my.hrw.com. __ Integrating Astronomy, Ion Propulsion in Deep Space 1, Online Students can visit my.hrw.com and enter the keyword HF6ELFX to find this activity. Teacher resources can be found by entering the keyword HF6ELFXT. (GENERAL) __ Problem Workbook, Sample Set D: Electric Field Strength, ANC This worksheet provides an additional example problem and several practice problems that cover electric field strength. (ADVANCED) __ Problem Bank, Sample Set D: Electric Field Strength, OSP This worksheet provides a third example problem and several practice problems that cover electric field strength. (ADVANCED) __ Invention Lab, Levitating Toys, ANC Students manipulate electrostatic field forces to cause objects to levitate. (ADVANCED) CHAPTER 16 Lesson Plan Chapter 16 Elec Fields/Forces __ SciLinks, Online Students can visit www.scilinks.org to find internet resources related to the chapter content. Topic: Microwaves SciLinks Code: HF60959 CHAPTER 16 Lesson Plan Chapter 16 Elec Fields/Forces END OF CHAPTER REVIEW AND ASSESSMENT PACING Regular Schedule: Block Schedule: with lab(s): N/A days with lab(s): N/A days without lab(s): 2 days without lab(s): 1 days __ Chapter Highlights, p. 580, SE This page summarizes the vocabulary terms and key concepts of the chapter. __ Chapter Review, 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) __ 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. (GENERAL) __ Standardized Test Prep, pp. 586–587, SE This feature helps students sharpen their testtaking abilities while reviewing the chapter content. (GENERAL) __ Appendix D: Equations, p. 861, SE This appendix summarizes the equations introduced in the chapter. __ Appendix I: Additional Problems, pp. 891–892, SE This appendix provides additional mixed practice problems that cover the equations introduced in the chapter. __ Study Guide, Mixed Review, ANC Students can use this worksheet to review the main concepts of the chapter in preparation for the chapter test. (GENERAL) __ Holt PuzzlePro® Use this software to create crossword puzzles and word searches that make learning vocabulary fun. __ Chapter Test A, ANC Assign this test for general-level chapter assessment. (GENERAL) __ Chapter Test B, ANC Assign this test for advanced-level chapter assessment. (ADVANCED) __ Test Generator Create a customized homework assignment, quiz, or test using the CHAPTER 16