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Heat death of the universe - Quiz
Heat death of the universe
  • 1. What did Max Planck say about the phrase 'entropy of the universe'?
A) It is the most important concept in modern physics.
B) It is equivalent to the entropy of a black hole.
C) It is perfectly defined by gravitational laws.
D) It has no meaning because it lacks an accurate definition.
  • 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 in equilibrium.
B) The system must be expanding.
C) The system must be composed of light.
D) The system must be infinite.
  • 4. What criticism does Hans Adolf Buchdahl make regarding the universe?
A) It is too small to be treated as a system.
B) It is actually an open system with external energy inputs.
C) It has no mass and therefore no entropy.
D) It is unjustifiable to treat it as a closed thermodynamic system.
  • 5. What does Giovanni Gallavotti say about entropy for non-equilibrium systems?
A) There is no universally accepted notion of it.
B) It is easily calculated for stationary states.
C) It is always equal to zero.
D) It is strictly defined by quantum mechanics.
  • 6. How do Lieb and Yngvason describe the state of non-equilibrium entropy?
A) It is clearly defined by gravitational constants.
B) It is widely accepted by all physicists.
C) It is impossible to define in a satisfactory way.
D) It is the primary driver of cosmic expansion.
  • 7. What does Peter Landsberg call the idea that thermodynamics applies to the whole universe?
A) A solved problem.
B) A fundamental law.
C) An experimental certainty.
D) A misconception.
  • 8. What is the status of entropy in a general gravitational field according to a 2010 analysis?
A) It is still not known.
B) It is equal to the entropy of the vacuum.
C) It is zero.
D) It is precisely calculated by recent studies.
  • 9. According to the 2010 analysis, what is the largest contributor to the entropy of the observable universe?
A) Supermassive black holes.
B) Stellar fusion.
C) Cosmic microwave background radiation.
D) Dark energy.
  • 10. What does Lee Smolin identify as important for keeping the universe out of thermal equilibrium?
A) Gravity.
B) Magnetic fields.
C) Dark energy.
D) Quantum fluctuations.
  • 11. What property of gravitationally bound systems does Lee Smolin note?
A) Negative specific heat.
B) Constant temperature.
C) Positive specific heat.
D) Zero entropy.
  • 12. How does a gravitationally bound system evolve according to Lee Smolin?
A) It loses all energy to the vacuum.
B) It dissolves into a uniform gas.
C) It becomes increasingly structured and heterogeneous.
D) It evolves toward a homogeneous equilibrium state.
  • 13. In a fragmented isolated system, what happens to entropy production?
A) It is zero.
B) It reaches a maximum.
C) It increases indefinitely.
D) It becomes negative.
  • 14. Does the non-equilibrium steady state of a fragmented system violate the second law of thermodynamics?
A) Yes.
B) Only at absolute zero.
C) Only under high gravity.
D) No.
  • 15. What is another name for the heat death of the universe?
A) The Great Compression
B) The Thermal Singularity
C) The Big Bang
D) The Big Chill or Big Freeze
  • 16. Heat death implies that the universe can no longer do what?
A) Expand further
B) Contain matter
C) Perform work
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) Lord Kelvin
D) Sadi Carnot
  • 19. What did Kelvin suggest might be required to revert the direction of the 'universal clock'?
A) The discovery of infinite mechanical energy
B) A massive increase in entropy
C) The contraction of dark matter
D) A creative act
  • 20. What is the expected decay time for a supermassive black hole of 1 galaxy mass due to Hawking radiation?
A) 1056 years
B) 10100 years
C) 10106 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) 10100 solar masses
B) 1010 solar masses
C) 1014 solar masses
D) 1056 solar masses
  • 23. What is the theorized timescale for a new universe to be created via quantum fluctuations?
A) 1014 years
B) 10100 years
C) 10106 years
D) 10101056 years
  • 24. In 1856, what did Hermann von Helmholtz suggest the heat death of the universe compelled humans to do?
A) Develop advanced space travel
B) Prevent entropy at all costs
C) Search for a new universe
D) Complete a moral destiny
  • 25. In the Doctor Who story 'Logopolis', how do the Logopolitans attempt to delay the demise of the universe?
A) By expelling entropy into other universes
B) By building machines to create new matter
C) By freezing stars to prevent energy loss
D) By traveling through time to reverse entropy
  • 26. What term does Doctor Who use for the vents created by Logopolitans?
A) Dimensional Energy Sinks
B) Charged Vacuum Emboitments
C) Entropy Leakage Points
D) Thermal Dissipation Vents
  • 27. How do the Photino Birds in the Xeelee Sequence accelerate the heat death?
A) By collapsing galaxies into black holes
B) By absorbing all dark matter
C) By accelerating the rate stars become white dwarfs
D) By sabotaging the laws of physics
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