Thermodynamics

Front

What does the second law of thermodynamics state about entropy?

Back

The second law of thermodynamics states that the entropy of a system tends to increase.

Front

How does thermal energy move between objects?

Back

Thermal energy always moves from a high temperature object to a lower temperature object.

Front

Why can't a heat engine be 100% efficient?

Back

A heat engine cannot be 100% efficient because heat is always created.

Front

What must be done for energy to be less concentrated?

Back

Work must be done to make energy less concentrated.

Front

How can energy be transferred from a cool object to a warm object?

Back

Energy can be transferred from a cool object to a warm object if work is done.

Front

Define thermal energy.

Back

Thermal energy is the total kinetic energy of particles in a substance, related to its temperature.

Front

What is entropy?

Back

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

Front

Explain the concept of a heat engine.

Back

A heat engine is a device that converts thermal energy into mechanical work.

Front

What is the relationship between temperature and thermal energy?

Back

Temperature is a measure of the average kinetic energy of particles in a substance, which relates to its thermal energy.

Front

What is conduction?

Back

Conduction is the transfer of thermal energy through direct contact between materials.