REVIEW Quiz 5 and 6

Heat is

• the  movement of thermal energy from a warmer to cooler object
• moving particles
• the average kinetic energy of the particles that are in a substance
• the  amount of matter in an object

The average kinetic energy of the particles that make up a substance is 

• temperature
• heat
• kinetic energy
• conduction

Heat is thermal energy transferred from one object to another becuase of a difference in

• mass
• volume
• temperature
• potential energy

When the temperature increases what else increases?

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

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

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

A hot iron is turned off and cools down to room temperature.  The iron cools because....

• the iron does not hold heat very well
• the room transfers cold energy to the iron
• heat energy is transferred from the warm iron to the cooler room
• the thermal energy is destroyed during an interaction with the room

Thermal energy keeps moving away from warmer objects to cooler objects until both are the same temperature.

• True
• False

When you touch something that feels cold, 

• heat from your hand moves into the cold substance.
• coldness moves from the cold substance into your hand.
• it melts.
• it freezes.

You're holding hands with your best friend.  Your friend's hands are REALLY warm and yours are really cold.  After a few minutes, this has changed.  How might you explain what happened?

• The cold energy from your hand transferred to your friend's hand through conduction.
• The heat energy from your friend's hand transferred to your hand through conduction. 
• The cold energy from your hand transferred to your friend's hand through convection.
• The heat energy from your friend's hand transferred to your hand through convection.

When a popsicle melts, the particles in the popsicle _____.

• gain thermal energy and speed up

• there are no particles in popsicles

• lose thermal energy and slow down

• stay the same