Thermal energy transfer

Heat always travels from the ______ to the ______ substance.

• warmer; cooler

• cooler; warmer

• cold; hot

• Heat does not travel.

Which picture shows convection?

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• 
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When we cook food the heat transfer is ____ because the food is in contact with the pan.

• over space

• conduction

• convection

• radiation

Which picture shows radiation?

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• 
• 
• 

Which of the following is NOT a method of heat transfer?

• convection
• induction
• conduction
• radiation