Science and Engineering Terms

Front

Drag

Back

The force caused by blades hitting air as the blades move. It is also called air resistance. Drag causes the blades to slow down.

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Pitch

Back

The angle of a turbine blade.

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Variable

Back

Any factor that can be controlled, changed, or measured in an experiment.

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Hypothesis

Back

An idea that can be tested through experimentation.

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Current

Back

Measure of the flow of electrons through wires measured in amperes (A) and milliamps (mA).

Front

Potential Difference (Voltage)

Back

Push that moves electrons through wires. Measured in Volts.

Front

Power

Back

Measure of how quickly energy is generated or used. Measured in Watts (W) and milliwatts (mW).

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Blade

Back

The flat, wide section of a device such as an oar or a wind turbine.

Front

Hub

Back

The center piece in a turbine that connects all the blades together.

Front

Motor

Back

Device that converts electrical energy into mechanical energy typically rotating coil of wire inside a magnetic field.