Thermal Energy

Temperature represents the average kinetic energy of the particles that make up a material.

• True

• False

The movement of thermal energy from a warmer object to a cooler object is called.....

• temperature

• thermal energy

• heat

Which increases the kinetic energy of the particles that make up a bowl of soup?

• Dividing the soup in half

• Putting the soup in a refrigerator

• heating the soup for 1 min on a stove

• decreasing the distance between the particles that make up the soup

The transfer of thermal energy from one material to another by electromagnetic waves is called radiation.

• True

• False

A thermal conductor is a material through which kinetic energy flows easily.

• True

• False

Conduction if the transfer of thermal energy between materials by the collisions of particles.

• True

• False

Thermal contraction is a _______ in a material'c volume when its temperature _________.

• increase, decreases

• decrease, decreases

• decrease, increases

• increase, increases

Thermal expansion is an _________ in a material's volume when its temperature __________.

• decrease, decreases

• increase, decreases

• increase, increases

Convection is the transfer of thermal energy by the movement of particles from one part of a material to another.

• True

• False

Why do hot air balloons rise?

• thermal conduction

• thermal convection

• thermal expansion

• thermal radiation