This is a simple to use Java based simulation from PhET, University of Boulder Colorado. In this simulation the learner can manipulate several variables related to the crust and then run experiments to produce data consistent with data from actual phenomena. This resource can be used in a variety of ways in the classroom. The interactive simulation offers the user the ability to manipulate the types of plates, the direction of movement, temperature, and thickness. Further, the user can accelerate time to test different types of plate-to-plate interactions. Further, this simulation could be used as an evidence collection component of an assessment.