RM 7 Electrical Energy

A radio is designed to change electrical energy into-

• sound energy

• gravity

• solar energy

• water

The electric wire on a refrigerator has a plastic coating. The wire inside the plastic is-

• a current of electricity

• a producer of electricity

• an insulator of electricity

• a conductor of electricity

Electrical energy is produced when-

• heat energy and gravity for a mixture

• a circuit loses its source of power

• soalr energy comes in contact with rain clouds

• a power source is inserted into a circuit

A student creates the setup as shown in the picture. Most likely, the student is testing to see if the-

• battery is expired

• the rock is a conductor of electrical energy

• light energy produces sound

• bulb is burned out

The energy used by the fan is most likely produced-

• at anb electronics store

• by an air conditioner

• at a power plant

• at a factory where fans are made

What most likely should be done for the circuit to light the bulb?

• Nothing: the circuit will light the bulb.

• The circuit needs a new battery.

• A wire needs to be added to complete the circuit.

• The wire should be removed.

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Which of the following are conductors of electrical energy?

• Copper wires, aluminum foil, wood

• Tap water, copper wires, aluminum foil

• Aluminum foil, plastic, tap water

• Paper, wood, plastic

The forms of energy given off by a lit candle are-

• magnetism and heat energy

• heat energy and light energy

• electricity and heat energy

• sound energy and electricity

What necessary part is missing in the circuit pictured?

• Another bulb

• Buzzer

• Magnet

• Source of energy

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What inference is the advertiser making in the advertisement pictured?

• The light bulbs are new and improved.

• These light bulbs can be purchased at Larry's Light Gallery.

• These bulbs last longer than other light bulbs.

• The new bulbs come in several colors