6.3 HEAT TRANSFER AND THERMAL
EQUILIBRIUM EXAM QUESTIONS AND
ANSWERS
Temperature - ANSWER-- The measure of the average kinetic energy of the particles in
a substance.
- Kinetic energy is directly proportional to temperature, so, at higher temperatures, the
particles will have higher KE, meaning, in turn, that their velocity is going to be greater-
they're moving faster.
Thermal equilibrium - ANSWER-As previously stated, KE moves from warmer objects to
cooler objects. Eventually, both objects will have the same average KE (temperature),
reaching what is known as thermal equilibrium.
Ex: If two objects- a hot object and a cold object- are pressed together, KE will be
transferred from the hot object to the cool object until they both reach the same
temperature that is warmer than what the cold object was, and cooler than what the
warm object was.
Thermal equilibrium at a particulate level - ANSWER-- At a particulate level, the
particles of the hot substance are moving more quickly than that of the cold substance.
When particles of a hot and cold substance collide with one another, there is a transfer
of kinetic energy in which both particles that have collided will move away from the
collision at an intermediate pace.
- After the objects have reached thermal equilibrium, there is still an exchange of kinetic
energy between particles, there is just no net change in heat, as the particles all move
at the same velocity. The rate of kinetic energy exchange is equal, which is what
defines thermal equilibrium.
Example of heat energy flow - ANSWER-An example of heat energy flow could be a
candle coming into contact with some sort of cooler object on one side. The particles
near the flame would start moving more quickly, and the vibrations would cause a
transfer of KE down until all of the material is warmer.
Heat - ANSWER-The word heat refers to a flow of energy, specifically, the flow of
kinetic energy.
The 0th Law of Thermodynamics - ANSWER-Heat flows from warmer objects (higher
kinetic energy) to cooler objects (lower kinetic energy).
EQUILIBRIUM EXAM QUESTIONS AND
ANSWERS
Temperature - ANSWER-- The measure of the average kinetic energy of the particles in
a substance.
- Kinetic energy is directly proportional to temperature, so, at higher temperatures, the
particles will have higher KE, meaning, in turn, that their velocity is going to be greater-
they're moving faster.
Thermal equilibrium - ANSWER-As previously stated, KE moves from warmer objects to
cooler objects. Eventually, both objects will have the same average KE (temperature),
reaching what is known as thermal equilibrium.
Ex: If two objects- a hot object and a cold object- are pressed together, KE will be
transferred from the hot object to the cool object until they both reach the same
temperature that is warmer than what the cold object was, and cooler than what the
warm object was.
Thermal equilibrium at a particulate level - ANSWER-- At a particulate level, the
particles of the hot substance are moving more quickly than that of the cold substance.
When particles of a hot and cold substance collide with one another, there is a transfer
of kinetic energy in which both particles that have collided will move away from the
collision at an intermediate pace.
- After the objects have reached thermal equilibrium, there is still an exchange of kinetic
energy between particles, there is just no net change in heat, as the particles all move
at the same velocity. The rate of kinetic energy exchange is equal, which is what
defines thermal equilibrium.
Example of heat energy flow - ANSWER-An example of heat energy flow could be a
candle coming into contact with some sort of cooler object on one side. The particles
near the flame would start moving more quickly, and the vibrations would cause a
transfer of KE down until all of the material is warmer.
Heat - ANSWER-The word heat refers to a flow of energy, specifically, the flow of
kinetic energy.
The 0th Law of Thermodynamics - ANSWER-Heat flows from warmer objects (higher
kinetic energy) to cooler objects (lower kinetic energy).
