Electricity Quiz

What is static electricity?

• Electricity from power plants

• Electricity when charge builds up on something

• Electricity used in homes

• Electricity from batteries

How do people use human-harnessed electricity?

• To power homes and businesses

• To rub balloons on hair

• To create lightning

• To make static shocks

How are static electricity and human-harnessed electricity different?

• Static electricity is used in computers, human-harnessed is not

• Static electricity is from power plants, human-harnessed is not

• Static electricity builds up on objects, human-harnessed powers homes

• Static electricity is used in phones, human-harnessed is not

Why would you choose human-harnessed electricity over static electricity for running appliances?

• It is less reliable

• It cannot power machines for long

• It provides steady energy

• It is used in air purifiers

What is the difference between a conductor and an insulator? (Choose the correct answer.)

• A conductor stops electricity, and an insulator lets electricity flow.

• A conductor lets electricity flow, and an insulator stops electricity.

• A conductor and an insulator both stop electricity.

Look at this list: wood, plastic, copper, rubber, and aluminum. Which are conductors and which are insulators?

• Conductors: Wood, Rubber; Insulators: Copper, Aluminum

• Conductors: Copper, Aluminum; Insulators: Wood, Plastic, Rubber

• Conductors: Plastic, Rubber; Insulators: Wood, Aluminum

You tested a metal spoon and a wooden spoon in a circuit. The light bulb turned on with the metal spoon but not the wooden one. Why?

• The metal spoon is an insulator, so it stops electricity.

• The wooden spoon is a conductor, so it lets electricity flow.

• The metal spoon is a conductor, so it lets electricity flow. The wooden spoon is an insulator, so it stops electricity.

Plan an experiment to test if different objects are conductors or insulators. What materials will you need? What steps will you take?

• Materials: paper, glue, scissors; Steps: cut, paste, decorate

• Materials: battery, wires, light bulb, different objects; Steps: connect, test, observe, record

• Materials: water, sand, rocks; Steps: mix, pour, dry

What is an electromagnet?

• A magnet that is always magnetic

• A magnet that requires electricity to work

• A magnet made of plastic

• A magnet that cannot be turned off

What is a permanent magnet?

• A magnet that can be turned on and off

• A magnet that is always magnetic

• A magnet that needs electricity to work

• A magnet made of rubber