Exploring Conductors and Insulators in Electrical Conductivity

What happens when a material that is a conductor is connected between the yellow and red wires?

• The light bulb lights up.

• The light bulb flickers.

• The light bulb explodes.

• The light bulb remains off.

Why does wood act as an insulator?

• Because it is a liquid.

• Because it does not have free-flowing electrons.

• Because it has free-flowing electrons.

• Because it is a metal.

What property of metals allows them to conduct electricity?

• They are insulators.

• They are transparent.

• They have free-flowing electrons.

• They have free-flowing ions.

Why does plastic not conduct electricity?

• Because it does not have free-flowing electrons.

• Because it is a metal.

• Because it has free-flowing ions.

• Because it has free-flowing electrons.

Under what condition can glass conduct electricity?

• When it is in its solid form.

• When it is in its molten or semi-liquid form.

• When it is cold.

• When it is transparent.

What is ITO glass made of?

• Iron, tin, and oxide.

• Indium, titanium, and oxide.

• Iron, titanium, and oxide.

• Indium, tin, and oxide.

What happens to the light bulb when the wires on ITO glass are moved further apart?

• The light bulb remains the same.

• The light bulb explodes.

• The light bulb gets dimmer.

• The light bulb gets brighter.

Does pure water conduct electricity well?

• Yes, it conducts electricity very well.

• No, it does not conduct electricity well.

• Yes, but only when it is hot.

• No, but only when it is cold.

What effect does adding salt to water have on its electrical conductivity?

• It decreases the conductivity.

• It has no effect on the conductivity.

• It increases the conductivity.

• It makes the water evaporate.

Why can salt water conduct electricity?

• Because it is a metal.

• Because it has free-flowing ions.

• Because it is transparent.

• Because it has free-flowing electrons.