Sample Unit III Outline

TOPICS	CONCEPTS	OBJECTIVES(TLW)	ACTIVITY

I. Work and Energy	When work is done by an outside force on a system, the total energy of the system is changed

A. Work	Work is done on an object when a force displaces the object. Work is a scalar quantity that is equal to the product of the component of the force acting in the direction of the motion and the displacement of the object	Use the terms of work, force and displacement properly in describing events. State the concept of work in their own words. Apply the concepts of work to their own experiences. Conduct experiments to determine work done on a system. Determine the work done on an object when a known force acts on that object over a specific distance.	Exploration III-1 It's All Uphill Application III-2 All Work and No Play

B. Energy	Energy is transferred when work is done. Energy is a scalar quantity	Describe events using correctly the concepts of kinetic energy and potential energy. Conduct experiments or activities to determine what variables affect potential and kinetic energy. Relate the potential energy stored in a linear spring to the expansion or compression of the spring.
1. Potential	Potential energy is the energy an object has because of its position or condition. Under ideal conditions it is equal to the work required to bring the object to that position or condition.

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