PS.5.1.3 (5.P.3.2) #3 Schoolnet (Conductors/Insulators)

Front

What is a conductor?

Back

A conductor is a material that allows the flow of electric current or heat through it easily. Examples include metals like copper and aluminum.

Front

What is an insulator?

Back

An insulator is a material that resists the flow of electric current or heat. Examples include rubber, plastic, and glass.

Front

Why is white rubber a good material for grips on handlebars in warm areas?

Back

White rubber reflects heat and does not heat up quickly, making it comfortable for use in warm conditions.

Front

Why are frying pan handles often coated with rubber?

Back

Frying pan handles are coated with rubber because rubber is a poor conductor of heat, preventing burns when handling hot pans.

Front

What characteristic of glass makes it suitable for holding candles?

Back

Glass does not melt easily, making it a safe material for containing candles.

Front

Why are cooking pan handles typically made of plastic?

Back

Cooking pan handles are made of plastic because plastic is a poor conductor of heat, reducing the risk of burns.

Front

What happens to iron when it is heated?

Back

Heating iron makes it softer, allowing it to be shaped more easily.

Front

What is the relationship between temperature and the conductivity of materials?

Back

Generally, as temperature increases, the conductivity of conductors increases, while the conductivity of insulators decreases.

Front

Give an example of a good conductor and explain why it is effective.

Back

Copper is a good conductor because it has free electrons that allow electric current to flow easily.

Front

What is the significance of using insulators in electrical wiring?

Back

Insulators are used in electrical wiring to prevent the loss of current and to protect users from electric shocks.