In this 8th grade unit, students investigate how sounds can cause objects at a distance to move. Motivated by a video of windows shaking when a truck outside plays loud music, students investigate what happens when an object makes sound. Over the course of the unit, they build a model that describes what happens when sounds are created that can explain the shaking windows and other examples of sounds causing objects to move.
In this unit, students use a particle model of air to build an understanding of how sounds move that explains the effect of sounds on other objects. They work on the practices of planning and conducting investigations, using mathematical and computational thinking, and evidence-based argumentation.
Sound Waves is aligned to the Next Generation Science Standards and is now freely available for download. This unit is part of the OpenSciEd middle school science program, currently being developed and rolled out in phases through winter 2022. BSCS Science Learning leads a consortium of organizations and science education experts in the development of this three-year program for grades 6-8.