PS3.A: Definitions of Energy

In this video Paul Andersen attempts to explain the age old questions - What is Energy?  Even though it comes in many forms one of the defining characteristics of energy is that it is conserved over time.  He then explains that all energy is either a function of motion, due to its position within a field or radiation.  A teaching progression K-12 is also included.

CCC5: Matter and Energy

In this video Paul Andersen explains how matter and energy flow and cycle through systems.  He starts by explaining how energy and matter input and output will always be conserved.  He addresses the many misconceptions surround energy and matter including the belief that food contains energy.  He explains how nuclear reactions conserve both batter and energy.  The video ends with a teaching progression for grades K-12.

SEP2: Developing and Using Models

Paul Andersen explains the importance of modeling in science and engineering.  Models are used by scientists to explain phenomenon.  Unlike mental models, conceptual models can be shared by all scientists to improve our understanding of the Universe.  Engineers use models study systems and test designs.