WORK AND ENERGY TEST

A conductor is a material that:

• Allows the flow of electrons

• Blocks the flow of electric current

• Is used to insulate wires

• Is a type of semiconductor

Define the following: Insulator.

• A material that allows the flow of electric current

• A material that resists the flow of heat and electric current

• A device that stores electrical energy

• A material that enhances the flow of electric current

After touching both materials with your hand, predict which one will melt the ice cube faster.

• Aluminum

• Plastic

Insulators are materials that __________.

• Insulators are materials that do not conduct electricity or heat.

• Insulators are materials that conduct electricity.

• Insulators are materials that conduct heat.

• Insulators are materials that conduct both electricity and heat.

Conductors are materials that __________.

• Conductors are materials that allow the flow of energy through them.

• Conductors are materials that block the flow of electric current.

• Conductors are materials that partially allow the flow of electric current.

• Conductors are materials that do not interact with electric current.

Heat from a light bulb _____________.

• Conduction

• Radiation

• Convection

Heating of water in a container _____________.

• Conduction

• Convection

• Radiation

Walking on hot sand _____________.

• Conduction

• Radiation

• Convection

Hot air rising _____________.

• convection

• Conduction

• Radiation

Solar energy from the sun _____________.

• Radiation

• Conduction

• Convection