Thermodynamics

Thermodynamics

Assessment

Flashcard

Physics

8th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

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.

2.

FLASHCARD QUESTION

Front

How does thermal energy move between objects?

Back

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

3.

FLASHCARD QUESTION

Front

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

Back

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

4.

FLASHCARD QUESTION

Front

What must be done for energy to be less concentrated?

Back

Work must be done to make energy less concentrated.

5.

FLASHCARD QUESTION

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.

6.

FLASHCARD QUESTION

Front

Define thermal energy.

Back

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

7.

FLASHCARD QUESTION

Front

What is entropy?

Back

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

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