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Heat death of the universe - Quiz
Contributed by: Lomas
  • 1. What did Max Planck say about the phrase 'entropy of the universe'?
A) It has no meaning because it lacks an accurate definition.
B) It is equivalent to the entropy of a black hole.
C) It is the most important concept in modern physics.
D) It is perfectly defined by gravitational laws.
  • 2. What reason did Walter Grandy give for being skeptical about universe entropy?
A) Entropy only applies to living organisms.
B) The universe is expanding too rapidly to measure.
C) The universe has never been in thermodynamic equilibrium.
D) The universe is composed of dark matter.
  • 3. According to László Tisza, what is a requirement for associating entropy with a system?
A) The system must be infinite.
B) The system must be in equilibrium.
C) The system must be composed of light.
D) The system must be expanding.
  • 4. What criticism does Hans Adolf Buchdahl make regarding the universe?
A) It is actually an open system with external energy inputs.
B) It is too small to be treated as a system.
C) It is unjustifiable to treat it as a closed thermodynamic system.
D) It has no mass and therefore no entropy.
  • 5. What does Giovanni Gallavotti say about entropy for non-equilibrium systems?
A) It is strictly defined by quantum mechanics.
B) It is easily calculated for stationary states.
C) It is always equal to zero.
D) There is no universally accepted notion of it.
  • 6. How do Lieb and Yngvason describe the state of non-equilibrium entropy?
A) It is widely accepted by all physicists.
B) It is the primary driver of cosmic expansion.
C) It is impossible to define in a satisfactory way.
D) It is clearly defined by gravitational constants.
  • 7. What does Peter Landsberg call the idea that thermodynamics applies to the whole universe?
A) An experimental certainty.
B) A misconception.
C) A fundamental law.
D) A solved problem.
  • 8. What is the status of entropy in a general gravitational field according to a 2010 analysis?
A) It is equal to the entropy of the vacuum.
B) It is precisely calculated by recent studies.
C) It is still not known.
D) It is zero.
  • 9. According to the 2010 analysis, what is the largest contributor to the entropy of the observable universe?
A) Cosmic microwave background radiation.
B) Stellar fusion.
C) Supermassive black holes.
D) Dark energy.
  • 10. What does Lee Smolin identify as important for keeping the universe out of thermal equilibrium?
A) Dark energy.
B) Quantum fluctuations.
C) Gravity.
D) Magnetic fields.
  • 11. What property of gravitationally bound systems does Lee Smolin note?
A) Zero entropy.
B) Positive specific heat.
C) Constant temperature.
D) Negative specific heat.
  • 12. How does a gravitationally bound system evolve according to Lee Smolin?
A) It dissolves into a uniform gas.
B) It loses all energy to the vacuum.
C) It evolves toward a homogeneous equilibrium state.
D) It becomes increasingly structured and heterogeneous.
  • 13. In a fragmented isolated system, what happens to entropy production?
A) It reaches a maximum.
B) It increases indefinitely.
C) It is zero.
D) It becomes negative.
  • 14. Does the non-equilibrium steady state of a fragmented system violate the second law of thermodynamics?
A) Only at absolute zero.
B) Yes.
C) No.
D) Only under high gravity.
  • 15. What is another name for the heat death of the universe?
A) The Big Chill or Big Freeze
B) The Thermal Singularity
C) The Great Compression
D) The Big Bang
  • 16. Heat death implies that the universe can no longer do what?
A) Perform work
B) Expand further
C) Contain matter
D) Exist in space
  • 17. Which cosmological conditions make a heat death expected?
A) Spherical curvature and negative dark energy
B) High density and collapsing gravity
C) Hyperbolic or flat curvature, or positive cosmological constant
D) Zero expansion and cooling
  • 18. Who is credited with first proposing the idea that bodies in the universe cool off until life cannot be supported?
A) Jean Sylvain Bailly
B) Rudolf Clausius
C) Sadi Carnot
D) Lord Kelvin
  • 19. What did Kelvin suggest might be required to revert the direction of the 'universal clock'?
A) The contraction of dark matter
B) A creative act
C) The discovery of infinite mechanical energy
D) A massive increase in entropy
  • 20. What is the expected decay time for a supermassive black hole of 1 galaxy mass due to Hawking radiation?
A) 10106 years
B) 1056 years
C) 10100 years
D) 1014 years
  • 21. Which concept, beyond thermodynamic entropy, continues to increase after entropy reaches its maximum?
A) Gravitational constant
B) Speed of light
C) Vacuum decay rate
D) Quantum circuit complexity
  • 22. How large might some black holes grow during the collapse of galaxy superclusters?
A) 1056 solar masses
B) 10100 solar masses
C) 1014 solar masses
D) 1010 solar masses
  • 23. What is the theorized timescale for a new universe to be created via quantum fluctuations?
A) 10101056 years
B) 10100 years
C) 1014 years
D) 10106 years
  • 24. In 1856, what did Hermann von Helmholtz suggest the heat death of the universe compelled humans to do?
A) Complete a moral destiny
B) Search for a new universe
C) Develop advanced space travel
D) Prevent entropy at all costs
  • 25. In the Doctor Who story 'Logopolis', how do the Logopolitans attempt to delay the demise of the universe?
A) By building machines to create new matter
B) By expelling entropy into other universes
C) By traveling through time to reverse entropy
D) By freezing stars to prevent energy loss
  • 26. What term does Doctor Who use for the vents created by Logopolitans?
A) Charged Vacuum Emboitments
B) Entropy Leakage Points
C) Thermal Dissipation Vents
D) Dimensional Energy Sinks
  • 27. How do the Photino Birds in the Xeelee Sequence accelerate the heat death?
A) By accelerating the rate stars become white dwarfs
B) By collapsing galaxies into black holes
C) By absorbing all dark matter
D) By sabotaging the laws of physics
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