8th Grade Science Guide

8.2: Physics 3 Dimensions & Progressions

Unit 1

● 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 refected, absorbed and transmitted through various materials referencing models in the explanation.

chamber, vacuum pump

Activity: Wave stations

Objective

Overview

Materials

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

● Students visit 8 different stations to make observations about wave properties.

● Lesson Plan & Student Worksheet

Activity: Sound through various media

Objective

Overview

Materials

● Sound is all around us.

● Full lesson plan ● Ping-pong ball, String, Tape, Paper clip, Tuning Fork, Rubber bands in various sizes, Marker, Shoebox or tissue box

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

Everything we hear in our day-to-day lives has a distinctive sound, from the jingling of keys to the tapping of footsteps in a hallway. Sound is created when objects vibrate.