8th Grade Science Guide

8.2: Physics 3 Dimensions & Progressions

Unit 1

●​ Student sheet Phet

through various materials referencing models in the explanation.

changing from air to water to glass changes the bending angle. Play with prisms of different shapes and make rainbows. ○​ Explain how light bends at the interface between two media and what determines the angle. ○​ Describe how the speed and wavelength of light changes in different media. ○​ Describe the effect of changing

Simulator: Bending Light

●​ Alternative website: Ripple Tank

wavelength on the angle of refraction.

○​ Explain how a prism creates a rainbow.

Activity: Sound in a Vacuum Chamber

Objective

Overview

Materials

●​ Teacher will perform this demonstration. Students will draw the set-up and then explain their observations. An electric bell or noise maker is put into a vacuum chamber and air is removed. Students should observe that no sound can be heard once the air is removed but is observable when air is returned to the chamber.

●​ electric bell, vacuum

●​ I can create a model of a mechanical wave that explains how they are reflected, absorbed and transmitted through various materials referencing models in the explanation.

chamber, vacuum pump

Activity: Wave stations

Objective

Overview

Materials