INTRODUCTION TO
THERMODYNAMICS- KEY TERMS EXAM
QUESTIONS WITH VERIFIED ANSWERS
Zeroth Law of Thermodynamics - ANSWER-A law that if two systems are separately
found to be in thermal equilibrium with a third system, the first two systems are in
thermal equilibrium with each other; that is, all three systems are at the same
temperature. Also known as thermodynamic equilibrium.
Thermal Conductivity - ANSWER-The rate at which heat passes through a specified
material, expressed as the amount of heat that flows per unit time through a unit area
with a temperature gradient of one degree per unit distance.
Q - ANSWER-energy transfer(Joules)
m - ANSWER-mass of material(kilograms)
c - ANSWER-specific heat capacity of the material(j/kg°C)
(delta)T - ANSWER-Change in temperature(celcius)
P - ANSWER-rate of energy transfer(Watts)
(delta)t - ANSWER-change in time(seconds)
k - ANSWER-thermal conductivity
A - ANSWER-area of thermal conductivity
L - ANSWER-thickness of material
Conduction - ANSWER-The transfer of heat within an object or between objects by
molecular activity, without any net external motion
Convection - ANSWER-Process by which, in a fluid being heated, the warmer part of
the mass will rise and the cooler portions will sink.
Energy - ANSWER-The ability to do work.
Entropy - ANSWER-The function of the state of a thermodynamic system whose
change in any differential reversible process is equal to the heat absorbed by the
system from its surroundings divided by the absolute temperature of the system.
THERMODYNAMICS- KEY TERMS EXAM
QUESTIONS WITH VERIFIED ANSWERS
Zeroth Law of Thermodynamics - ANSWER-A law that if two systems are separately
found to be in thermal equilibrium with a third system, the first two systems are in
thermal equilibrium with each other; that is, all three systems are at the same
temperature. Also known as thermodynamic equilibrium.
Thermal Conductivity - ANSWER-The rate at which heat passes through a specified
material, expressed as the amount of heat that flows per unit time through a unit area
with a temperature gradient of one degree per unit distance.
Q - ANSWER-energy transfer(Joules)
m - ANSWER-mass of material(kilograms)
c - ANSWER-specific heat capacity of the material(j/kg°C)
(delta)T - ANSWER-Change in temperature(celcius)
P - ANSWER-rate of energy transfer(Watts)
(delta)t - ANSWER-change in time(seconds)
k - ANSWER-thermal conductivity
A - ANSWER-area of thermal conductivity
L - ANSWER-thickness of material
Conduction - ANSWER-The transfer of heat within an object or between objects by
molecular activity, without any net external motion
Convection - ANSWER-Process by which, in a fluid being heated, the warmer part of
the mass will rise and the cooler portions will sink.
Energy - ANSWER-The ability to do work.
Entropy - ANSWER-The function of the state of a thermodynamic system whose
change in any differential reversible process is equal to the heat absorbed by the
system from its surroundings divided by the absolute temperature of the system.
