CPALMS: Energy - Electrical

Which of the following is a source of electrical energy?

• A wooden stick

• A battery

• A plastic cup

• A rubber band

What is the purpose of an electrical circuit?

• To store energy

• To allow electricity to flow

• To block electricity

• To create light

Which material is a good conductor of electricity?

• Glass

• Rubber

• Copper

• Plastic

What is an insulator?

• A material that allows electricity to flow

• A material that blocks electricity

• A device that generates electricity

• A type of battery

What happens in an electrical circuit when a switch is turned off?

• The circuit is completed

• The circuit is broken

• The circuit becomes faster

• The circuit becomes slower

Which of the following is an example of energy transformation?

• A light bulb converting electrical energy to light

• A battery storing energy

• A wire conducting electricity

• A switch turning on

Why is it important to use insulated tools when working with electricity?

• To make the tools heavier

• To prevent electrical shock

• To make the tools more colorful

• To conduct electricity better

Which of the following is a safe practice when using electricity?

• Using wet hands to plug in a device

• Overloading an electrical outlet

• Keeping electrical devices away from water

• Pulling a plug out by the cord

What is the role of a battery in a circuit?

• To stop the flow of electricity

• To provide electrical energy

• To insulate the circuit

• To change the direction of electricity

Which of the following materials is an insulator?

• Aluminum

• Silver

• Rubber

• Gold