7th Grade Science Guide

7.1: Field Forces 3 Dimensions & Progressions

Unit 2

● Observe magnetic feld lines for attracting and repelling magnets. ● Use magnetic feld lines to predict if an object will be attracted to a magnet or repelled. ● Observe magnetic feld lines produced by ferromagnetic materials. (Extension.)

Activity: Gizmo Charge Launcher

Objective

Overview

Materials

● Understand that

● The Charge Launcher Gizmo introduces students to electrostatic forces and challenges them to solve problems. Students launch charged particles across a grid containing fxed particles. The path of the launched particle is shown. Students can create a wide variety of paths by manipulating the particles on the grid and the speed of the launched particle.

● Gizmo

electrically-charged particles can exert force at a distance.

● Determine that like charges repel and

opposite charges attract. ● Predict the path of a launched charged particle based on the position of one or more fxed charged particles. ● Match a given path by manipulating fxed charged particles on a grid. ● Compare electrical forces to magnetic forces. (Extension)

Activity: Are You One with the Force?

Objective

Overview

Materials

● I can collect and analyze data to identify factors that affect the strength of electric and magnetic forces.

● Students observe the

● Lesson Plan ● Balloons ● Sinks or pitchers of water and containers to catch the water in

effect static electricity can have on water and bubbles and are challenged to create a