Thermal Energy

Air currents that flow from the Caribbean to the poles move heat from warmer climates to colder ones. These currents move heat by the process of

• Conduction

• Convection

• Radiation

What two factors determine how much thermal energy a substance has?

Which kinds of materials do not conduct heat well?

• insulators

• conductors

• metals

• radiators

Lava burns or melts most things it touches, it’s so hot it can set a tree on fire even if the tree is several feet away from it. This phenomenon is caused by the process of

• conduction

• convection

• radiation

Which has more thermal energy?

• a cup of water at 39૦C

• a cup of water at 60૦C

The amount of energy per kilogram needed to increase the temperature of a material by 1K is called the

• specific heat

• heat sensitivity

• heat resistance

• thermal heat

What is the process by which heat transfers from one particle to another when the particles collide

• conduction

• expansion

• radiation

• convection

Which has more thermal energy?

• 
• 

The speed of two bumper cars decreases as their bumpers rub against each other. What happens to the temperatures of the bumpers due to the force of friction?

• Both bumpers cool down.

• Both bumpers warm up.

• One bumper cools down while the other warms up.

• Both bumpers remain at the same temperature.

True or false:

Energy is conserved when a lamp is turned on because some of the electrical energy is transferred into thermal energy.

• True

• False