A) 1905
B) 1923
C) 1897
D) 1879

A) Flat
B) Curved
C) Hexagonal
D) Spherical

A) The reversal of time
B) The existence of gravitational waves
C) The absence of black holes
D) The existence of parallel universes

A) Momentum is equivalent to energy
B) Voltage is equivalent to current
C) Charge is equivalent to mass
D) Gravity is equivalent to acceleration

A) As the interaction of strong and weak forces
B) As the transfer of particles
C) As the curvature of spacetime
D) As the result of friction

A) Four
B) Two
C) Three
D) Six

A) Black hole formation
B) Time dilation
C) Frame dragging
D) Quantum superposition

A) The distance between galaxies
B) The circumference of the Earth
C) The event horizon of a black hole
D) The curvature of a wormhole

A) Reflection diffraction
B) Electromagnetic deflection
C) Optical refraction
D) Gravitational lensing