Thermal Expansion

What is Thermal expansion?

• The transfer of thermal energy between materials by the collisions of particles 
• Is a decrease in a materials volume when temperature decreases 
• An increase in a materials volume when temperature increases
• Chicken fried rice

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A bimetallic strip is made up of _____________________ welded together.

• two metals of the same kind 
• two different metals that expand and contract unequally
• two different metals that expand and contract equally

What is Thermal Contraction

• The movement of particles.

• A decrease in a materials volume when its temperature decreases

• The movement of fluids in a cycle because of convection

• A material through which thermal energy does not flow easily.

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Which is NOT an insulator.

• Wool
• Plastic
• Copper
• Glass

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Is iron a conductor or insulator?

• Conductor
• Insulator

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Is wood a conductor or insulator?

• Conductor
• Insulator

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Conductors are materials that...

• Allow heat to pass through
• Stop heat from passing through
• Allow cold to pass through
• Stop cold from passing through

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All of the following are conductors except _______.

• metal spoon
• wire
• iron nail
• plastic spoon

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The kind of heat transfer that travels through space in electromagnetic waves is ______________________.

• insulation.
• Radiation
• Conduction
• Convection

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Warm air rises and the cool air sinks demonstrates this type of heat transfer. 

• conduction
• convection
• radiation
• Insolation 

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