A "black hole" appears black because ________________.?

Question

A. it is too cool to radiate

B. it is surrounded by an absorbing layer of gas

C. its gravitational field is too strong to permit light to escape

D. its magnetic filed is too strong to permit light to escape

Answer 1

C.its gravitational field is too strong to permit light to escape

Answer 2

c.

the escape velocity of a black hole is larger than 299,792,458 m/s inside the event horizon  which means light can be bent back on its self and "sucked" into singularity because not even light is fast enough to escape the gravity of a black hole and because nothing can go faster than light no information can escape from a black hole. and if a object releases no light it is black (the absence of light)

Answer 3

C its gravity is so strong not even light escapes

Answer 4

it's C

Answer 5

It was too lazy to do its own homework.

Answer 6

C is the answer

Answer 7

C and partially A.

If the theory about Hawking radiation is correct, The event horizon of a  black hole does radiate like a black body with a very low temperature for typical masses, outside the visible light (The temperature equivalent is a few nano-Kelvin for super massive black holes). But that is not equal to the real temperature of the matter inside the black hole on the other side of the event horizon - it is only what we can observe.

Additionally, the high gravity of  black hole means, that any event inside the event horizon of the black hole can't escape, except by the mechanism of Hawking radiation.

Answer 8

C

Answer 9

C, but strictly speaking a black hole also distorts time, to the point where it actually stops at the event horizon of the black hole. so if you fell in one for you your death would be quick and over, but for someone else away from the gravity of a black hole you would appear to hover above it not moving at all so billions of years will pass before you actually touch the surface

Answer 10

As you noticed, C is the politically correct answer.  In practice, if you were near a black hole it would probably appear bright because of all the matter falling in from every direction would appear bright.  It just depends on how much matter is currently falling into the black hole.