# Lesson Worksheet: Electrical Conductors and Insulators Science • 4th Grade

In this worksheet, we will practice identifying the properties of electric conductors and insulators and testing whether a material is a conductor of electricity.

Q1:

A class tested different materials to see if they were conductors or insulators. Look at their table of results. Can you see a pattern in which materials are conductors?

MaterialInsulatorConductor
Silver fork
Metal key
Plastic spoon
Aluminum foil
Plastic bag
• AAll the plastic objects are conductors.
• BAll the metal objects are conductors.

Q2:

Which of the following materials do you think it would be safe to wrap the outside of a switch in?

• AGold
• BCopper
• CSilver
• DPlastic

Q3:

Fill in the blank: A material that does not allow electricity to flow through it easily is called an electrical .

• Aconductor
• Bbarrier
• Cinsulator

Q4:

Looking at the diagram below, how do we know that the metal nail is a conductor?

• AIt changes colors when electricity flows through it.
• BIt allows electricity to flow through it so the bulb lights up.
• CIt does not allow electricity to flow through it so the bulb does not light up.

Q5:

I have used a plastic spoon in this circuit. Is the plastic spoon a conductor?

• AYes
• BNo

Q6:

Metals tend to be good conductors while plastics are very good insulators. Look at the diagram of the wire shown and fill in the missing label with a material.

• APlastic
• BMetal
• CWood

Q7:

Fill in the blank: A material that allows electricity to flow through it easily is called an electrical .

• Agate
• Binsulator
• Cconductor

Q8:

A class is conducting experiments in groups testing whether different materials conduct or insulate electricity. Which of the groups’ circuits is properly set up for the experiment?

• A
• B
• C
• D

Q9:

Which of the following would be the best material to use for electric wires?

• ACopper
• BGlass
• CPlastic

Q10:

True or False: Materials that allow electricity to flow through them are called electrical conductors.

• ATrue
• BFalse