Conductors and Insulators

Which item would not be considered a good conductor?

• safety pin

• tack

• nail

• cork

Many people wear clothing made from wool in the winter when temperatures are colder. Which is the best reason why people wear clothes made from wool?

• Wool is a good insulator.

• Wool is a good conductor.

• Wool has a low density.

• Wool is very soluble.

Janice practices playing the drums each day after school in her room. Her father wants to add some material to the walls of her room to help sound proof it. Which material would be best to use?

• aluminum sheets

• copper boards

• cork boards

• tin sheets

Tony is boiling a pot of water on the stove. The black handle is made of rubber, and the pot is made of steel. Why is black handle made of rubber and pot made of steel?

• Rubber is a good conductor, and steel is a good insulator.

• Rubber is a poor insulator, and steel is a poor conductor.

• Rubber is a good insulator, and steel is a good conductor.

• Rubber is a good conductor, and steel is a poor insulator.

A pot of water is boiling in a metal pan. Why might the handle be made of wood?

• It is a good conductor of heat.

• It has a low density and will float in water.

• It is magnetic and will repel the heat.

• It is a good insulator of heat.

Why do many tools have a rubber or plastic handle?

• They will not react when exposed to chemicals.

• They do not melt when exposed to high temperatures.

• They are used because they are good conductors of heat.

• They are used because they are good insulators of electricity.

A pot of food cooked on the stove for an hour. Why can Amanda pick up the pot by the handle with her bare hand?

• The handle was made of a material that was a good conductor of thermal energy.

• The handle was made of a material that was a good conductor of electrical energy.

• The handle was made of a material that was a poor conductor of thermal energy.

• The handle was made of a material that was a poor conductor of electrical energy.

Tonya replaced the single pane windows in her house with double pane windows with air between the panes. Why is it easier to heat her house after replacing the windows?

• The air between the windows acted as an insulator.

• The air between the windows acted as a conductor.

• The increased volume of the glass acted as an insulator.

• The increased volume of the glass acted like a conductor.

To survive during an extremely cold night, a lost camper made a snow cave to sleep in. Which explains why the camper stayed warm in the snow cave?

• The snow melted releasing heat into the cave.

• The snow transferred heat from its molecules to the air inside the cave.

• The snow conducted heat from the outside of the air inside the cave.

Antonio is trying to separate two wires carrying electricity. What material should be used to accomplish this task?

• steel

• copper

• rubber

• aluminum