Heat Conduction and Insulation

What is thermal energy?

• heat

• a measure of the kinetic energy of the molecules in a substance

• energy due to heat

• Solids, liquids, and gases

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How is energy transferred?

• Convection

• Conduction

• Radiation

• All of the above

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Insulators:

• Help transmit heat or energy when there is a difference in temperature

• Prevent the flow of heat

• Help transmit electric energy when there is a difference in temperature

• Prevent the flow of electricity and heat energy

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Why are metals useful for making electrical wire?

• Metals do not bend.
• Metals hold much heat.
• Metals are insulators.
• Metals are conductors.

Which is NOT an insulator.

• Wool
• Plastic
• Copper
• Glass

Something electricity can't move through is called a(n) ______.

• conductor
• wire
• shoe
• insulator

What is a example of a conductor?

• wood 
• metal
• rubber
• rock

What is a example of a insulator?

• metal 
• rubber
• water

Water is a insulator.

• True
• False

What are Conductors?

• A conductor is a material that allows electric charge to move through it as an electric current. Usually the charge is carried by electrons, and the conductor is a metal.
• an insulator
• an conductor 
• A material or an object that does not easily allow heat, electricity, light, or sound to pass through it. Air, cloth and rubber are good electrical insulators; feathers and wool make good thermal insulators. Compare conductor.

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