Physics Quiz: Heat & Thermodynamics

What is the definition of thermodynamics?

• The study of chemical reactions

• The study of light and sound

• The study of heat, work, and temperature

• The study of motion and forces

What is a thermodynamic system?

• A system with transparent walls

• A system with movable walls

• A system with impermeable walls

• A system with no walls

What is the definition of heat?

• The transfer of matter between systems

• The transfer of sound energy

• The transfer of energy across a system boundary due to a temperature difference

• The transfer of light energy

What is the relationship between temperature and heat flow?

• Heat flows from lower pressure to higher pressure

• Heat flows from higher pressure to lower pressure

• Heat flows from higher temperature to lower temperature

• Heat flows from lower temperature to higher temperature

What is the definition of internal energy?

• The energy associated with the macroscopic components of a system

• The energy associated with the microscopic components of a system

• The energy associated with the position of an object

• The energy associated with the motion of an object

What is the Zeroth Law of Thermodynamics?

• Objects in thermal equilibrium have the same pressure

• Objects in thermal equilibrium have different pressures

• Objects in thermal equilibrium have different temperatures

• Objects in thermal equilibrium have the same temperature

What is the primary mechanism of heat transfer in solids?

• Conduction

• Radiation

• Convection

• Expansion

What is the First Law of Thermodynamics?

• Energy cannot be created or destroyed

• The total entropy of an isolated system can never decrease over time

• The change in internal energy is equal to the heat flow into the system plus the work done on the system

• Heat always flows from higher temperature to lower temperature

What is the process that occurs at constant volume?

• Isochoric process

• Adiabatic process

• Isothermal process

• Isobaric process

What is the relationship between linear thermal expansion and initial length?

• Δl ~ ∝ΔT

• Δl = ∝lΔT

• Δl = l(1+∝ΔT)

• Δl = l + ∝lΔT