About This Lesson
Learn how friction causes a material to heat up and melt. Rub two objects together and they heat up. When one reaches the melting temperature, particles break free as the material melts away;
Sample Learning Goals
•Describe a model for friction a molecular level.
•Describe matter in terms of molecular motion. The description should include: diagrams to support the description, how the particle mass and temperature affect the image, what are the differences and similarities between solid, liquid and gas particle motion; how the size and speed of gas molecules relate to everyday objects
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