# Schwarzschild metric: Quiz

Question 1: The Schwarzschild solution is named in honour of its discoverer ________, who found the solution in 1915, only about a month after the publication of Einstein's theory of general relativity.
Schwarzschild metricAlbert EinsteinKarl SchwarzschildGeneral relativity

Question 2: He died shortly after his paper was published, as a result of a disease he contracted while serving in the German army during ________.
Caucasus CampaignWorld War IWestern Front (World War I)Armenian Genocide

Question 3: The original form of the Schwarzschild metric involves ________ coordinates, in terms of which the velocity of light is not the same for the radial and transverse directions (pointed out by A S Eddington).
GeologyQuartzAnisotropySilicon

Question 4: The ________ is assumed to equal zero.
UniverseDark energyBig BangCosmological constant

Question 5: The ratio only becomes large close to ________ and other ultra-dense objects such as neutron stars.
Black holeSchwarzschild metricKerr metricKerr–Newman metric

Question 6: It is also a good approximation to the gravitational field of a slowly rotating body like the ________ or Sun.
NatureMoonMarsEarth

Question 7: According to Birkhoff's theorem, the Schwarzschild solution is the most general spherically symmetric, vacuum solution of the ________.
Einstein field equationsIntroduction to general relativityGravitationExact solutions in general relativity

Question 8: For example, the radius of the ________ is approximately 700,000 km, while its Schwarzschild radius is only 3 km.
Solar SystemSunEarthStar

Question 9: The Schwarzschild black hole is characterized by a surrounding spherical surface, called the event horizon, which is situated at the ________, often called the radius of a black hole.

Question 10: In Einstein's theory of general relativity, the Schwarzschild solution (or the Schwarzschild vacuum) describes the gravitational field outside a spherical, non-rotating mass such as a (non-rotating) star, planet, or ________.
Kerr–Newman metricKerr metricSchwarzschild metricBlack hole