ELECTRICAL CONDUCTORS AND INSULATORS A little background First

ELECTRICAL CONDUCTORS AND INSULATORS

A little background… First of all, you are going to watch some video clips. https: //www. bbc. co. uk/bitesize/topics/z 2882 hv/articles/zxv 482 p https: //www. bbc. co. uk/bitesize/clips/zy 2 qxnb

Electricity travels easily through electrical conductors, like metals.

Materials that do not let electricity pass through them easily are called electrical insulators. Plastic, wood, glass and rubber are good electrical insulators.

ELECTRICAL CONDUCTORS Some materials let electricity pass through them easily. These materials are known as electrical conductors. Many metals, such as copper, iron and steel, are good electrical conductors. That is why the parts of electrical objects that need to let electricity pass through are always made of metal

ELECTRICAL INSULATORS Some materials do not allow electricity to pass through them. These materials are known as electrical insulators. Plastic, wood, glass and rubber are good electrical insulators. That is why they are used to cover materials that carry electricity. The plastic covering that surrounds wires is an electrical insulator. It stops you from getting an electrical shock. Plastic cover

Now let us answer Mr. Frog’s questions to help him fix his circuit! A material that lets electricity pass through it is called. . . an electrical conductor an electrical insulator an electrical appliance

A material that lets electricity pass through it is called. . . an electrical conductor an electrical insulator an electrical appliance

A material that does NOT let electricity pass through it is called. . . an electrical conductor an electrical insulator an electrical appliance

A material that does NOT let electricity pass through it is called. . . an electrical conductor an electrical insulator an electrical appliance

Which of the following materials is an electrical conductor? Silver Wood Plastic

Which of the following materials is an electrical conductor? Silver Wood Plastic

Which of the following materials is an electrical insulator? Iron Gold Rubber

Which of the following materials is an electrical insulator? Iron Gold Rubber

Why is electrical wiring usually covered with a layer of plastic? To make it look pretty To help electricity flow along the wire To make it safe

Why is electrical wiring usually covered with a layer of plastic? To make it look pretty To help electricity flow along the wire To make it safe

Quiz time… Click on this link and test your knowledge, have another go if you feel you didn’t do so well. https: //www. educationquizzes. com/ks 2/science/electrical-conductorsand-insulators/ Once you have done that, sort these objects into groups, insulators or conductors. The sheet is on the Virtual Classroom. Don’t forget to send us a picture of your work.

Well done! If you’d like to try some more activities, click on the following link. http: //www. primaryhomeworkhelp. co. uk/re vision/Science/electricity. htm