Power and Energy Overview

Knowledge Check:

Now watch the following Nova video, Energy Defined , for an overview of the scientific principles of energy

Video:

Now watch the following Nova video, Energy Defined , for an overview of the scientific principles of energy

Important: In this module, you will create a mousetrap car.

A mousetrap and household materials will be required.

Module Lessons Preview

In this module, we will study the following topics:

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Conservation – Most efficient, non-wasteful, use of energy.

Efficiency –A measure of the ratio of output work energy over input work energy.

Energy – The ability to do work, which is also identified as a force, measured in Newtons or pounds.

Nonrenewable source of energy – Sources that are used up or depleted upon energy conversion.

Power – Energy over time measured in kilowatt and horsepower. This includes energy conversion from one form to another, rate at which work is done, and energy transfer.

Power Systems – Systems to provide electricity or propulsion to other technologies.

Renewable source of energy - Sources that are perennial and everlasting.

Work - The amount of force applied multiplied by the distance obtained, measured in joules and foot-pounds.

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