HAC 101 Quiz 1

What is the first law of thermodynamics?

• Energy can be transformed into any form except heat

• Energy can be created and destroyed at will

• Energy can only be transformed into matter

• Energy cannot be created or destroyed, only transformed from one form to another.

State the second law of thermodynamics.

• Total entropy of an isolated system can never decrease over time

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

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

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

Explain the concept of entropy as per the laws of thermodynamics.

• Entropy is a measure of the amount of pressure in a system.

• Entropy is a measure of the amount of heat in a system.

• Entropy is a measure of the amount of disorder or randomness in a system.

• Entropy is a measure of the amount of energy in a system.

What are the three methods of heat transfer?

• Reflection, absorption, transmission

• Expansion, compression, diffusion

• Evaporation, condensation, sublimation

• Conduction, convection, and radiation

Describe conduction as a method of heat transfer.

• Transfer of heat through sound waves

• Transfer of heat through electromagnetic waves

• Transfer of heat through fluid movement

• Transfer of heat through direct contact between particles of a substance

Explain the process of convection in heat transfer.

• Convection only happens in liquids, not gases

• Convection is the transfer of heat through the movement of fluids (liquids or gases). It occurs when warmer, less dense fluid rises, and cooler, denser fluid sinks, creating a continuous circulation.

• Convection is the transfer of heat through solid materials

• Convection occurs when warmer fluid sinks and cooler fluid rises

What is meant by thermal equilibrium?

• Objects with different shapes in contact

• Objects with different masses in contact

• Same temperature of two or more objects in contact

• Objects emitting different colors of light

How does thermal equilibrium relate to the zeroth law of thermodynamics?

• Thermal equilibrium is the basis for the zeroth law of thermodynamics.

• Thermal equilibrium has no relation to the zeroth law of thermodynamics

• Thermal equilibrium is only applicable to the first law of thermodynamics

• Thermal equilibrium is only important in chemistry, not thermodynamics

Define an isothermal process in thermodynamics.

• A process in which the volume of a system remains constant

• A process in which the pressure of a system remains constant

• A process in which the energy of a system remains constant

• A process in which the temperature of a system remains constant

What is an adiabatic process in thermodynamics?

• A process in which the system absorbs heat from the surroundings

• A process in which the system remains at a constant temperature

• A process in which the system releases heat to the surroundings

• A process in which no heat is transferred to or from the system