Friction

This simulation can be used to demonstrate how friction causes a material to heat up and melt. It shows how when two objects are rubbed together they heat up. When one reaches the melting temperature, particles break free as the material melts away.

Sample learning objectives include:

*Describe a model for friction at 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.

Curriculum links include friction, heat and thermodynamics

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This resource is part of PhET Interactive Simulations

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