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Merch
Quizzes
FAQ
About
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Universe & Physics
What causes time dilation in special relativity?
Acceleration in zero gravity
Relative motion between observers at high speeds
Atmospheric interference
Changes in gravitational potential
None
What is the primary evidence for the existence of dark matter?
Gravitational effects on visible matter and galaxy rotation curves
Fluctuations in background neutrino levels
Magnetic fields in galaxy clusters
Radiation detected from distant galaxies
None
Which force is considered the weakest but has infinite range?
Gravitational force
Strong nuclear force
Weak nuclear force
Electromagnetic force
None
Which cosmic event is thought to have produced the first elements in the universe?
Supernova explosions
Cosmic inflation
Neutron star collisions
Big Bang nucleosynthesis
None
What is the current best estimate for the age of the universe?
20.4 billion years
9.7 billion years
13.8 billion years
7.2 billion years
None
What does the cosmological constant represent in Einstein's field equations?
Energy density of empty space (vacuum energy)
Gravitational pull of stars
Mass of black holes
Speed of cosmic expansion
None
According to quantum field theory, what mediates the electromagnetic force?
Gravitons
Higgs bosons
Gluons
Photons
None
What is the theoretical limit beyond which no information can escape a black hole?
The Hawking boundary
The event horizon
The singularity core
The accretion disk
None
What phenomenon occurs when light moves away from a gravitational field?
Doppler compression
Photon splitting
Lensing reflection
Gravitational redshift
None
What is the Planck length thought to represent?
The smallest meaningful length in physics
The radius of a proton
The wavelength of cosmic radiation
The length of a light pulse
None
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