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Read the Following Selection
Read about conductors and insulators, or click on the play button below to listen aloud.
Conductors and Insulators
Electricity flows through wires to make devices work. Electrical wires run through the walls in a house. Can electricity flow through all types of material? No. Some materials block the path of electricity.
A conductor is any material that electricity can flow through easily. Metals, water, and people all conduct electricity. Metal conducts electricity best.
An insulator is any material that electricity cannot flow through. An electric charge cannot move easily through rubber, plastic, glass, or wood.
Conductors and Insulators in Daily Life
Electrical cords on devices such as televisions and lamps are covered in plastic. Inside the plastic is a metal wire. These metal wires are often made of copper. Copper is a good conductor.
Electricity flows through the wire, but not through the plastic. That means you can touch the cord without getting a shock.
When electricians work, they protect themselves by wearing thick rubber gloves. The gloves prevent electricity from flowing into the worker.
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0 Essay(s) Pending (Possible Point(s): 0)
1. Is a pencil a conductor or an insulator?CorrectIncorrect
2. Is a coin a conductor or an insulator?CorrectIncorrect
3. Are plastic buttons conductors or insulators?CorrectIncorrect
4. Is a magnet a conductor or an insulator?CorrectIncorrect
5. Is glass a conductor or insulator?CorrectIncorrect