Physics Instructional Guide

Electrostatics

Physics

Quarter 4

McGraw Hill Module 18

RESOURCES

PACING

● Module Launch: 45 min ● Lesson 1: 45 min ● Lesson 2: 90 min ● Module Close: 45 min

Module 18: Electrostatics ● Phenomenon: Why does the rod cause the water to bend? ● Lesson 1: Electric Charge ● Lesson 2: Electrostatic Force ● Module Wrap Up

STANDARD

LEARNING PROGRESSIONS

● Students will explore the evidence we have for electric charge and how some materials are electric conductors while others are electric insulators. This will lead them to understand charge objects can attract or repel each other ● Students will explore how objects can be charged, as well as Coulomb's law. This will lead them to understand that a charged rod will exert an electrostatic force on polar water molecules ● Students will explore electric felds and how they can be modeled. This will lead them to understand that electric felds explain why a charged rod doesn’t need to touch water to exert a force on it

Standard PHYS.3.1 Use mathematics and computational thinking to compare the scale and proportion of gravitational and electric felds using Newton’s Law of Gravitation and Coulomb’s Law. Emphasize the comparative strength of these two feld forces, the effect of distance between interacting objects on the magnitudes of these forces, and the use of models to understand feld forces. (PS2.B)

Standard PHYS.3.3 Analyze and interpret data to compare the effect of changes in position of interacting objects on electric and gravitational forces and energy. Emphasize the similarities and differences between charged particles in electric felds and masses in gravitational felds. Examples could include models, simulations, or experiments that produce data or illustrate feld lines between objects. (PS3.C)

● Students will explore

electrical potential energy, capacitors, and how the charge of an electron was determined. This will lead them to understand that energy can be stored in electric felds.