Chapter 5: Thermal Energy

When temperature increases, average _____ increase.

• potential energy
• kinetic energy
• gravitational energy
•  total energy 

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In years past, people would put a hot water bottle in bed with them to help warm their feet. The transfer of warmth from the water bottle to their feet is called ____. 

• heat
• temperature
• thermal energy
• kinetic energy 

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Temperature is a measure of ____ of the particles in an object . 

• the difference between the potential and kinetic energy
• the sum of the potential and kinetic energy 
• the average potential energy 
• the average kinetic energy 

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The thermal energy of an object is _______ .

• its potential energy 
• its average kinetic energy 
• its potential energy minus its kinetic energy 
• its kinetic energy plus its potential energy 

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Heat is the thermal energy transferred from one object to another because of the difference in _____. 

• mass
• temperature
• volume
• potential energy 

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Heat is ____ energy that is transferred from one object at a certain temperature to another at a different temperature. 

• kinetic
• thermal 
• solar
• electromagnetic

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Most materials ____ when they are heated. 

• condense
• freeze
• expand
• contract

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Heat always moves from  _____ objects to _____ objects. 

• cooler, warmer
• warmer, warmer
• warmer, cooler
• cooler, cooler

When water is heated on a stove, which kind of energy is transferred? 

• gravitational energy 
• kinetic energy 
• potential energy 
• thermal energy 

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A girl stirs soup with a metal spoon. Which process causes her hand to get warmer?

• insulation
• radiation
• convection
• conduction