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The Mechanical Universe Name: Entropy Class

The document discusses entropy and the laws of thermodynamics. It defines the four laws of thermodynamics, including that the entropy of an isolated system not in equilibrium will tend to increase over time. It also notes that the second law of thermodynamics is what any engine works on. Finally, it states that increasing entropy of the universe is driving it to an ultimate state of disorder, or "heat death".

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Dani Jo Owens
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98 views2 pages

The Mechanical Universe Name: Entropy Class

The document discusses entropy and the laws of thermodynamics. It defines the four laws of thermodynamics, including that the entropy of an isolated system not in equilibrium will tend to increase over time. It also notes that the second law of thermodynamics is what any engine works on. Finally, it states that increasing entropy of the universe is driving it to an ultimate state of disorder, or "heat death".

Uploaded by

Dani Jo Owens
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOC, PDF, TXT or read online on Scribd
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THE MECHANICAL UNIVERSE Name:

Entropy Class:

1. Briefly state the 4 laws of thermodynamics:

 If 2 thermodynamic systems are each in thermal equilibrium with a third, then they are
in thermal equilibrium with each other

 Energy cannot be created or destroyed. It can only change forms

 The entropy of an isolated system not in equilibrium will tend to increase over time

 As temperature approaches absolute zero, the entropy of a system approaches a


constant minimum

2. Is thermal equilibrium easy or hard to find in the real world? Hard

3. Which direction does heat flow? Hot to cold

4. The existence of any engine works on what principle? Second Law of Thermodynamics

5. As a falling body bounces, where does all the energy of motion eventually go?

6. What is the name of the most efficient engine possible? Carnot’s engine

7. In addition to conserving energy, what else is conserved in an ideal engine? Entropy

8. The state of equilibrium is also the state of maximum . Entropy

9. Is water at a higher or lower state of entropy compared to ice? Higher


10. Explain what is meant by the “heat death” of the universe? Increasing entropy of
universe is driving universe to ultimate state of disorder

11. Explain how entropy defines the flow of time itself:

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