ME 215 Final Exam Questions and All
Correct Answers 2026 Update.
thermodynamics - Answer Movement, flow, conversion of energy
energy flow - Answer heat transfer, work, energy
heat transfer - Answer Movement of energy driven by temperature difference
work - Answer Force x Distance; any energy transfer that is not heat transfer
energy - Answer The ability to do work
1st Law of Thermodynamics - Answer Energy cannot be created nor destroyed. It can only be
converted from one form to another.
Ein- Eout = ∆Esys = Qin- Wout
matter - Answer Condensed energy
system - Answer Area/Volume/Region of interest
surroundings - Answer Everything else
properties - Answer Characteristics of system or surroundings
boundary - Answer "Barrier" between system and surroundings
types of systems - Answer Open, closed, isolated
open system - Answer Energy and mass can cross the boundary
closed system - Answer Energy may cross boundary, but matter cannot
isolated system - Answer Mass nor energy can cross the boundary
, state - Answer Collection of properties that completely describe a system
simple compressible system - Answer Two independent properties define a state completely
process - Answer Path taken between states
unaffected - Answer States are _____________ by the path taken to get to/from them.
path functions - Answer Work and heat transfer are _____________.
isothermal process - Answer Constant temperature
isobaric process - Answer Constant pressure
isochoric/isometric process - Answer Constant volume
adiabatic process - Answer No heat transfer
polytropic process - Answer PVⁿ=constant
intensive properties - Answer Do not scale with size
Temperature, Pressure - Answer Examples of intensive properties
extensive properties - Answer Change with size
Volume, Internal Energy, Enthalpy, Entropy - Answer Examples of extensive properties
specific heat properties - Answer Const P:Cp, Const V:Cv
temperature - Answer Expression of kinetic energy of molecules
Lord Kelvin (William Thomson) - Answer Created the Kelvin temperature scale
Correct Answers 2026 Update.
thermodynamics - Answer Movement, flow, conversion of energy
energy flow - Answer heat transfer, work, energy
heat transfer - Answer Movement of energy driven by temperature difference
work - Answer Force x Distance; any energy transfer that is not heat transfer
energy - Answer The ability to do work
1st Law of Thermodynamics - Answer Energy cannot be created nor destroyed. It can only be
converted from one form to another.
Ein- Eout = ∆Esys = Qin- Wout
matter - Answer Condensed energy
system - Answer Area/Volume/Region of interest
surroundings - Answer Everything else
properties - Answer Characteristics of system or surroundings
boundary - Answer "Barrier" between system and surroundings
types of systems - Answer Open, closed, isolated
open system - Answer Energy and mass can cross the boundary
closed system - Answer Energy may cross boundary, but matter cannot
isolated system - Answer Mass nor energy can cross the boundary
, state - Answer Collection of properties that completely describe a system
simple compressible system - Answer Two independent properties define a state completely
process - Answer Path taken between states
unaffected - Answer States are _____________ by the path taken to get to/from them.
path functions - Answer Work and heat transfer are _____________.
isothermal process - Answer Constant temperature
isobaric process - Answer Constant pressure
isochoric/isometric process - Answer Constant volume
adiabatic process - Answer No heat transfer
polytropic process - Answer PVⁿ=constant
intensive properties - Answer Do not scale with size
Temperature, Pressure - Answer Examples of intensive properties
extensive properties - Answer Change with size
Volume, Internal Energy, Enthalpy, Entropy - Answer Examples of extensive properties
specific heat properties - Answer Const P:Cp, Const V:Cv
temperature - Answer Expression of kinetic energy of molecules
Lord Kelvin (William Thomson) - Answer Created the Kelvin temperature scale
