NCES.7.P.2 - Understand forms of energy, energy transfer and transformation and conservation in mechanical systems.
- NCES.7.P.2.1 - Explain how kinetic and potential energy contribute to the mechanical energy of an object.
- NCES.7.P.2.2 - Explain how energy can be transformed from one form to another (specifically potential energy and kinetic energy) using a model or diagram of a moving object (roller coaster, pendulum, or cars on ramps as examples).
- NCES.7.P.2.3 - Recognize that energy can be transferred from one system to another when two objects push or pull on each other over a distance (work) and electrical circuits require a complete loop through which an electrical current can pass.
- NCES.7.P.2.4 - Explain how simple machines such as inclined planes, pulleys, levers and wheel and axels are used to create mechanical advantage and increase efficiency.