Four Laws of Thermodynamics

What is entropy?

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

• Entropy is the total energy of a system.

• Entropy is a measure of the temperature of a system.

• Entropy is the amount of work done by a system.

Explain the third law of thermodynamics.

• The third law of thermodynamics states that as the temperature of a system approaches absolute zero, the entropy of a perfect crystal approaches zero.

• The third law of thermodynamics states that energy cannot be created or destroyed, only transformed.

• The third law of thermodynamics states that the entropy of a system always increases over time.

• The third law of thermodynamics states that at absolute zero, all molecular motion ceases.

What is the significance of the Carnot cycle?

• It is a practical engine design used in modern cars.

• It provides the maximum possible efficiency for a heat engine.

• It is a type of refrigeration cycle used in air conditioners.

• It describes the behavior of gases at high temperatures.

What process does heat travel from the sun to the earth?

• Conduction

• Convection

• Radiation

• Reflection

What is the zeroth law of thermodynamics?

• The zeroth law states that energy cannot be created or destroyed.

• The zeroth law states that if two systems are each in thermal equilibrium with a third system, then they are in thermal equilibrium with each other.

• The zeroth law states that the total entropy of an isolated system can never decrease over time.

• The zeroth law states that all gases behave ideally at high temperatures.

What is temperature a measure of?

• The total mass of a substance

• The average kinetic energy of molecules in a substance

• The volume of a substance

• The density of a substance

True or False: A slower particle has a lower energy than an identical, faster particle.

• True

• False

• It depends on the mass

• Both particles have the same energy

What is a thermodynamic system?

• A process that converts heat into work.

• A quantity of matter or a region in space chosen for analysis.

• A method to measure temperature changes.

• A type of energy transfer between systems.

How many laws of thermodynamics are there?

• 2 laws of thermodynamics

• 3 laws of thermodynamics

• 4 laws of thermodynamics

• 5 laws of thermodynamics

What does the first law of thermodynamics state about energy?

• Energy can be created and destroyed.

• Energy is conserved.

• Energy can be transformed from one form to another.

• Energy is always increasing.