Universe MCQs

71. What is the name of the process by which a solid becomes a gas?
a) Condensation
b) Evaporation
c) Sublimation
d) Fusion

72. What is the name of the region of space around a black hole from which nothing can escape?
a) Event horizon
b) Singularity
c) Accretion disk
d) Photon sphere

73. What is the name of the largest moon in our solar system?
a) Europa
b) Titan
c) Ganymede
d) Io

74. What is the name of the theory that describes how the planets formed from a disk of gas and dust around the Sun?
a) Nebular theory
b) Geocentric theory
c) Heliocentric theory
d) Copernican theory

75. What is the name of the brightest star in the night sky?
a) Betelgeuse
b) Sirius
c) Vega
d) Procyon