Heat Flow

A solid, such as a popsicle, has a definite shape and a definite volume. If you add heat to the popsicle by leaving it in the sun, what happens to it?

• The particles in the popsicle stop moving and the volume increases.

• The particles in the popsicle vibrate back and forth while the shape and volume remain the same.

• The particles in the popsicle slow down and the shape changes.

• The particles in the popsicle speed up and the popsicle no longer has a definite shape.

Heat transfers from ______ objects to cold objects. 

• Cold

• Hot

• Convection

• Radiation 

What type of heat transfer is occurring in the picture below? (the pan is touching the burner)

• conduction

• convection

• radiation

• insulation

What type of thermal energy transfer is number 1 pointing to?

• Convection

• Conduction

• Radiation

• Insulation

What type of thermal energy transfer is number 2 pointing to?

• Convection

• Conduction

• Radiation

• Insulation

What type of thermal energy transfer is number 3 pointing to?

• Convection

• Conduction

• Radiation

• Insulation

the movement of heat energy in the form of waves without matter to carry it

• absorption

• conduction

• convection

• radiation

the movement of heat in liquids and gases from a warmer area to a cooler area

• absorption

• conduction

• convection

• radiation

the movement of heat between two materials that are touching

• absorption

• conduction

• convection

• radiation

What happens to particles as they heat up?

• They slow down

• Nothing

• They don't move

• They speed up