Research Thoughts:

constraint: A limitation or restriction. For engineers, constraints are the requirements and limitations that the final design solutions must meet.

energy: The ability to make things happen. Motion, heat, light and sound are clues that energy is present.

energy transfer: When energy changes from one form to another, or when energy is transferred from one object to another.

kinetic energy: The energy of moving objects. Anything in motion has kinetic energy.

prototype: A first attempt or early design of a new creation or product. May be revised many times.

wind energy: The energy contained in moving air. Wind energy is a form of kinetic energy.