In the context of nuclear fusion in massive stars, which of the ...

[amal]

In the context of nuclear fusion in massive stars, which of the following statements is true of carbon fusion?
 
  A) At lower temperatures than carbon fusion, nuclei of oxygen, neon, and magnesium fuse to make iron.
  B) At lower temperatures than carbon fusion, iron can fuse to make silicon.
  C) As carbon is exhausted, core ignition and shell ignition continue with a series of heavier nuclei as fusion fuel.
  D) As soon as the carbon is exhausted in the core of massive stars, the core expands, and carbon ignition pauses.

Question 2

In the context of Schwarzschild black holes, the _____ is the boundary between the isolated volume of space-time and the rest of the Universe.
 
  A) bridge fragment
  B) event horizon
  C) pulsating point
  D) status curve

[aidanmbrowne]

Answer to Question 1

C

Answer to Question 2

B

[amal]

Gracias!

[yeungji]

TYSM