Science Review

The flow of electrons when an energy source is connected in a closed circuit.

• Current

• Compound battery

• Resistance
• Voltage

Batteries store potential energy as chemical energy. The chemical energy can be transformed into electrical energy when the battery is part of a closed circuit.

• Voltage

• Amperes

• Watts

Measured in volts

• (V)

• (A)

• (W)

This device is used to measure volts in a circuit

A _________ measures the gain in potential energy.

A unit to measure power (amount of electrical energy supplied).

• Watts
• Amperes

• Volts

Current (A) x Voltage (V) = _____

• Watts (W)
• Voltage (V)

• Current (A)

Each individual D-Cell battery has ____ of potential energy (stored energy).

• 1.5 V
• 2.5 V

• 3.5 V

• 4.5 V

Add voltage for each battery together.

• Series
• Parallel

Voltage for one battery (Other batteries are backup batteries).

• Parallel
• Series

The one thing you change in an experiment.

• Independent Variable
• Dependent Variable

• Controlled Variable