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