The movement of thermal energy from warmer objects to cooler objects. 

• friction
• heat
• solar energy
• solid

The energy of moving particles in matter.

• thermal energy
• insulation
• conduction 
• ice

_______ molecules move ________ and do not produce a lot of energy.  _______  molecules move _______ and produce a lot of energy.  

• Hot, fast, Cold, slowly
• Cold, slowly, Hot, fast
• Hot, cold, Slowly, fast
• Slowly, cold, Fast, hot

A melting ice cube is an example of an object that gains _______________.

• water
• size
• thermal energy
• insulation

A burning fire is an example of heat being ____________.

• given off
• saved
• wasted
• insulated

Heat is produced, or made, by 

• Only friction and electricity
• Only Mixing chemicals
• Only Burning fuels
• ALL of these

The force that occurs when one object rubs against another object. 

• insulator
• conductor
• friction
• melting

The ______ is the major source of heat.  Its energy is changed to heat when energy is ___________ by a material.

• sun, absorbed 
• sun, reflected
• sun, blasted
• sun, destroyed

_________ items absorb more heat than _________ items. 

• Darker, lighter
• Lighter, darker

On a hot summer day, I should wear a __________ shirt to stay cool. 

• white
• blue
• black
• green