Vocabulary - Conductors And Insulators printable pdf download

Vocabulary - Conductors And Insulators

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Vocabulary

STUDENT RESOURCE PAGE 3.1

INFORMATION SHEET

conductor a material current can pass

insulator a material that current cannot

through easily

pass through easily

A good conductor has low resistance

Insulators block the ﬂ ow of current.

to the ﬂ ow of electric charges. Metals,

Plastic and rubber, like that used to

like aluminum, gold, and copper,

cover wires, are examples of insulators.

are good conductors. Solutions that

ion an atom with an electric charge

contain ions also are good conductors.

When dissolved in water, molecules

A material that resists, but does not

of table salt break apart, forming ions

stop, the ﬂ ow of electric charges is a

of sodium and chlorine. These ions have

poor conductor. The ﬁ lament of a light

electrical charges that allow them to

bulb is an example of a poor conductor.

carry electric current through the water.

Pure water is also a poor conductor of

electricity.

ELECTRICITY • SECTION 3 CONDUCTORS AND INSULATORS

Vocabulary - Conductors And Insulators