A) An empty void B) A fully formed galaxy C) An extremely hot and dense point D) A flat disc
A) The Big Bang theory B) String theory C) Steady State theory D) Quantum theory
A) Georges Lemaître B) Albert Einstein C) Stephen Hawking D) Isaac Newton
A) Archaeological findings B) Volcanic eruptions C) Cosmic microwave background radiation D) Fossil records
A) Inflation B) Attraction C) Stagnation D) Contraction
A) Photon B) WIMP (Weakly Interacting Massive Particle) C) Quark D) Neutrino
A) Decay B) Nebula C) Event Horizon D) Singularity
A) Voyager B) Mars Rover C) Hubble Space Telescope D) COBE (Cosmic Background Explorer)
A) Expanding B) Collapsing C) Reversing D) Stagnating
A) 10 billion years ago. B) 20 billion years ago. C) 13.787±0.02 billion years ago. D) 15 billion years ago.
A) Physicist Alexander Friedmann in 1922. B) Albert Einstein in the early 1900s. C) Georges Lemaître in 1931. D) Edwin Hubble in 1929.
A) The universe is contracting over time. B) Galaxies remain stationary relative to each other. C) Galaxies are moving away from Earth at a rate that accelerates proportionally with distance. D) The universe has always been static.
A) The creation of dark matter particles. B) The slowing down of cosmic expansion. C) The accelerating expansion of the universe. D) The formation of black holes.
A) Galaxies remain stationary relative to each other. B) The expansion of the universe is accelerating. C) The universe is contracting. D) The universe has always been static.
A) The steady-state model. B) The inflationary model. C) The Big Bang model. D) The cyclic model.
A) General relativity B) The cosmological principle C) The universality of physical laws D) Perfect fluid assumption
A) Fine-structure constant B) Perfect fluid model C) The cosmological principle D) General relativity
A) 10−7 B) 10−5 C) 10−3 D) 10%
A) 100% homogeneity B) About 10% inhomogeneity C) 1% inhomogeneity D) 50% inhomogeneity
A) It consists only of dark energy B) It has high viscosity C) It can be modeled as a perfect fluid D) It is non-uniform
A) Direct observation B) Indirect evidence C) Particle collision experiments D) Electromagnetic radiation
A) Fred Hoyle B) George Gamow C) Robert Herman D) Ralph Alpher
A) 372±14 kyr B) 2.726 K C) 3.000 K D) 2.7255 K
A) They only apply to black holes. B) Because the temperature approaches the Planck scale, requiring quantum gravity treatment. C) They are based on incorrect assumptions. D) They do not account for dark energy.
A) Iron-56, Silicon-28, Magnesium-24 B) Helium-4, Helium-3, Deuterium, Lithium-7 C) Carbon-12, Nitrogen-14, Oxygen-16 D) Uranium-238, Thorium-232, Lead-206
A) Baryonic matter B) Dark matter C) Luminous matter D) Dark energy
A) Recombination B) Big Bang nucleosynthesis (BBN) C) Symmetry-breaking phase transitions D) Mass annihilation
A) 50 km/s/Mpc B) 30 km/s/Mpc C) 70.4+1.3−1.4 km/s/Mpc D) 100 km/s/Mpc
A) Helium-3 B) Helium-4 C) Lithium-7 D) Deuterium
A) Cosmic microwave background radiation B) Gravitational lensing frequency C) Baryon acoustic oscillations D) Redshift–magnitude relation for type Ia supernovae
A) 3.000 K B) Approximately 2.7255 K C) 372±14 kyr D) 2.726 K
A) Photons B) Baryonic matter C) Antimatter particles D) Dark energy
A) Cosmic microwave background radiation B) Black hole mergers C) Primordial gravitational waves D) Dark matter particles
A) Edwin Hubble B) Alexander Friedmann C) Georges Lemaître D) Vesto Slipher
A) Analyzing galaxy cluster velocities B) Measuring cosmic microwave background radiation C) Observing light emissions D) Laboratory experiments
A) 85% B) 73% C) 50% D) 60%
A) Baryon asymmetry B) Cosmic microwave background radiation C) Horizon problem D) Dark energy
A) 1953 B) 1927 C) March 1949 D) 1931
A) 50% B) 25% C) Up to 90% D) 10%
A) Vesto Slipher B) Georges Lemaître C) Edwin Hubble D) Alexander Friedmann
A) E = mc² B) v = H₀D C) a² + b² = c² D) F = ma
A) They modify gravitational laws B) They measure visible matter density C) They detect dark matter particles directly D) They help study galaxy clusters
A) Quantum singularity B) Cosmic egg C) Primeval atom D) Ylem
A) Georges Lemaître B) Edwin Hubble C) Arthur Eddington D) Fred Hoyle
A) Albert Einstein B) Georges Lemaître C) Edwin Hubble D) Astronomer Fred Hoyle
A) Light emitted today may never reach very distant objects B) The speed at which light travels C) The presence of dark matter D) The finite age of the universe
A) Thermal phase transitions B) Quantum phase transitions C) Gravitational phase transitions D) Symmetry-breaking phase transitions
A) 4.6% B) 73% C) 23% D) Less than 1%
A) The exact end state B) Infinite timescales C) Finite durations D) Beyond the observable universe
A) 40–50% B) 5–10% C) 10–15% D) 20–30%
A) 1964 B) 2003 C) 1989 D) 1978
A) 68% B) 27% C) 100% D) 5% |