P5 Science · Chapter 19brightbit.net/worksheets
Conductors & Insulators
Name: ______________________Class: ________Date: ____________Score: ____ / 10
- 1.
What is an electrical conductor?
(a) A material that does not allow electricity to pass through(b) A material that allows electricity to pass through it easily(c) A material that stores electricity(d) A material that produces electricity
- 2.
What is an electrical insulator?
(a) A material that allows electricity to pass through easily(b) A material that does not allow electricity to pass through it easily(c) A type of battery(d) A material that makes electricity stronger
- 3.
Which of the following is a good electrical conductor?
(a) Rubber(b) Wood(c) Copper(d) Plastic
- 4.
Give THREE examples of electrical insulators.
- 5.
Why are electrical wires covered with a layer of plastic or rubber?
(a) To make the wire look colourful(b) To make the wire stronger(c) To prevent electricity from escaping and to protect people from electric shocks(d) To help electricity flow faster
- 6.
A student tests different objects to see if they conduct electricity. She finds that a metal spoon completes the circuit but a wooden ruler does not. What can she conclude?
- 7.
Why are the handles of screwdrivers and pliers used by electricians made of rubber or plastic?
(a) To make the tools lighter(b) To make the tools look attractive(c) To insulate the electrician from electric shocks(d) To make the tools easier to grip
- 8.
Which of the following materials would you use to make the inside of an electrical plug?
(a) Copper for the pins and plastic for the casing(b) Plastic for everything(c) Wood for the pins and rubber for the casing(d) Glass for the pins and metal for the casing
- 9.
Is water a conductor or an insulator of electricity?
- 10.
Explain why metals are generally good conductors of electricity while materials like rubber and plastic are not.
Answer key — P5 Science: Conductors & Insulators
For parents. Step-by-step explanations for every question are free on brightbit.net.
- 1.(b) A material that allows electricity to pass through it easily
- 2.(b) A material that does not allow electricity to pass through it easily
- 3.(c) Copper
- 4.Rubber, plastic, and wood (also acceptable: glass, cloth, ceramic, paper)
- 5.(c) To prevent electricity from escaping and to protect people from electric shocks
- 6.The metal spoon is an electrical conductor because it allows electricity to flow through it and complete the circuit; the wooden ruler is an electrical insulator because it does not allow electricity to pass through
- 7.(c) To insulate the electrician from electric shocks
- 8.(a) Copper for the pins and plastic for the casing
- 9.Water (especially tap water or salt water) is a conductor of electricity; this is why we should never touch electrical appliances with wet hands
- 10.Metals have free-moving electrons that can carry electric current easily; rubber and plastic do not have free-moving electrons, so electricity cannot flow through them
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