Unit 5 Energy and Electricity Test

A light bulb converts electrical energy into which of the following?

• light only

• heat only

• heat and light

• light and motion

Many appliances in your home and school use electrical energy. Which of these appliances is intended to convert electrical energy into sound energy?

• printer

• refrigerator

• electric fan

• radio

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Sidney wants to make an electric circuit. She gathers the items shown. What additional item does Sidney need to make a complete circuit?

• battery

• switch

• insulator

• conductor

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Which of the following items would work best to complete a circuit?

• metal coin

• string

• plastic spoon

• wooden toothpick

The magnet is moving inside the wire coil, producing an electric current in the picture. What happens to the electric current if the magnet no longer moves in the coil?

• It stops flowing.

• It continues to flow as it did.

• It flows in the opposite direction.

• It starts to flow in the magnet instead of the wire.

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The illustration shows an electric circuit consisting of a battery, a switch, and three light bulbs. What type of circuit is shown in the diagram?

• closed circuit

• double circuit

• parallel circuit

• series circuit

The picture shows a device made of a battery, a nail, and a long piece of copper wire. It converts electrical energy into a different form of energy. Which term below describes the device in the illustration?

• electric switch

• electromagnet

• electric motor

• electric generator

What is the sum of the kinetic and potential energy of an object?

• light energy

• electrical energy

• mechanical energy

• chemical energy

Tags

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Jesse cooks a pizza in a gas oven. Which form of energy cooks the pizza?

• chemical

• electrical

• heat

• light

A book falls on the floor. Which is the main form of energy that results when the book strikes the floor?

• heat energy

• kinetic energy

• sound energy

• chemical energy

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