Electricity

Which is NOT true of electricity?

• Humans did not invent electricity.

• It allows us to see with candles and kerosene lamps.

• It’s a form of energy.

• Lightning and thunder are examples of electricity.

The word electricity comes from the Greek word for ruby. True or false?

• True

• False

What did Ben Franklin show with his famous kite experiment?

• how to create a battery

• that electromagnetic waves could be found and turned into sound energy

• that lightning is electricity

Which describes static electricity?

• a flow of electrons along a circuit

• an object that allows an electric current to flow easily

• electricity that stays in one place and builds up on an object

Everything is made of tiny atoms. Each of these atoms is made up of a core that has a positive charge, and some electrons that circle around the core. These have a negative charge. When these electrons move around in a substance and between substances, an _______________ is created.

• even charge

• uneven charge

Which explanation describes why a balloon will stick to a wall?

• like repels like

• opposites attract.

Which explains how lightning is formed?

• two objects with different electric charges rub together

• two objects with the same electric charge rub together

Which word is used to describe a flow of electrons through a conductor?

• a current

• a discharge

• a spark

Which describes the electricity we get from batteries?

• AC power

• DC power

Which current describes a flow that always goes in one direction?

• alternating current (AC)

• direct current (DC)