Insulators and Conductors

A material that lets electric current pass through it.

• conductor

• insulator

• circuit

A material that blocks the flow of an electric current is called a/an ___________________.

• conductor

• circuit

• insulator

What are some examples of insulators?

• silver, iron, cooper

• metal spoon, penny, aluminum

• rubber, glass, wood

Which of the following is the best example of an electrical conductor?

• copper wire

• glass baking pan

• paper

A student is having a problem getting a light bulb to light up in an electrical circuit. They notice there is a gap in the wiring but there is not enough wire to complete the circuit. What could the student do to fix the problem?

• put a plastic handle in the gap

• attach an iron nail to the wires in between the gap

Which group of materials are all insulators?

• string, coins, aluminum foil

• wooden chopsticks, rubber bands, glass spoon

• water, graphite, plastic

A circuit with a gap is called ____________ circuit.

• open

• closed

• parallel

Two or more 1.5 V cells together are called a _____________.

• bulb holder

• wires

• battery

If there is a break in a circuit, electricity will not _____________ around the circuit.

• run

• flow

• blow

A ______________ is used in a circuit to make something spin around.

• buzzer

• bulb

• motor