A) 100 kilometers per second. B) 299,792 kilometers per second. C) 1,000 kilometers per second. D) 500,000 kilometers per second.
A) A region of spacetime where matter is compressed into a small volume. B) A region of spacetime where gravity is so strong that nothing, not even light, can escape. C) A region of spacetime where time flows backwards. D) A region of spacetime where gravity is weak.
A) A black hole surrounded by a disk of hot, glowing gas. B) A distant galaxy with an active nucleus. C) A highly magnetized rotating neutron star that emits beams of electromagnetic radiation. D) A cloud of gas and dust in space.
A) The bending of light due to the distortion of spacetime by a massive object. B) The reflection of light off a mirror. C) The refraction of light through a prism. D) The scattering of light by air molecules.
A) A small moon of a gas giant planet. B) A type of asteroid in our solar system. C) A type of star in the Milky Way. D) An extremely bright and distant active galactic nucleus powered by a supermassive black hole.
A) The point in time when the black hole formed. B) The edge of the black hole where light can still escape. C) The center of the black hole. D) The boundary beyond which nothing can escape from the black hole's gravitational pull.
A) A type of neutron star with an extremely powerful magnetic field. B) An imaginary type of star. C) A type of red giant star. D) A type of black hole.
A) Energy that is dark in color. B) A hypothetical form of energy that permeates all of space and accelerates the expansion of the universe. C) A type of invisible radiation. D) A type of dark matter.
A) A black hole created in a laboratory. B) A black hole with a mass millions to billions of times that of the sun, typically found at the center of galaxies. C) An ordinary black hole found throughout the universe. D) A black hole with a mass similar to that of Earth.
A) A type of black hole. B) A compact star primarily composed of neutrons that result from the gravitational collapse of a massive star. C) An ordinary star like the sun. D) A star composed mostly of protons.
A) Waves of gravity emitted by stars. B) Wave-like fluctuations in the strength of gravity. C) Waves that can be used to ride through space. D) Ripples in spacetime caused by the acceleration of massive objects.
A) A type of red giant star. B) An ordinary star like the sun. C) A hypothetical type of compact star composed of quarks. D) A star made of dark matter.
A) A region in spacetime where gravity disappears. B) A region in spacetime where time stops. C) A region in spacetime where gravitational forces cause matter to be infinitely compressed. D) A region in spacetime where matter ceases to exist.
A) The distance from the sun at which Earth's orbit ends. B) The distance from Earth to the moon. C) The radius of the event horizon of a non-rotating black hole. D) The distance at which light bends around a massive object.
A) Spaghettification B) Levitation C) Teleportation D) Time reversal
A) Nuclear fission B) Nuclear fusion C) Electron capture D) Neutron activation
A) Photon B) Muon C) Graviton D) Neutrino
A) 27% B) 5% C) 15% D) 49%
A) A form of electromagnetic gun. B) A theoretical propulsion system that uses magnetic fields and plasma to generate thrust. C) An experimental spacecraft engine that uses solar wind. D) A type of rocket engine.
A) The increase in wavelength of light from a source moving away from an observer. B) The shift in color of stars as they age. C) The bending of light due to gravity. D) The decrease in wavelength of light from a source moving towards an observer.
A) Loop quantum gravity B) M-theory C) Superstring theory D) String theory
A) Black hole B) Supernova C) Red giant D) White dwarf
A) Pulsar B) Quasar C) Brown dwarf D) Magnetar
A) Quantum entanglement B) Lorentz transformation C) Time dilation D) Length contraction
A) 4.5 billion years B) 13.8 billion years C) 10 million years D) 1 trillion years
A) Stephen Hawking B) Isaac Newton C) Galileo Galilei D) Albert Einstein
A) Flattens it B) Curves it C) Expands it D) Straightens it
A) General relativity B) String theory C) Quantum field theory D) Quantum mechanics
A) Infrared B) X-ray C) Visible light D) Ultraviolet
A) Spiral B) Elliptical C) Irregular D) Dwarf
A) Event horizon B) Photon sphere C) Ergosphere D) Singularity
A) Kilonova B) Quasar merger C) Nova D) White dwarf collision
A) String theory B) Quantum mechanics C) General relativity D) Special relativity
A) Event horizon B) Photon sphere C) Singularity D) Ergosphere
A) Carbon B) Iron C) Hydrogen D) Oxygen
A) Internal energy B) Entropy C) Temperature D) Pressure |