Stars form from a collapsing cloud that fragments into smaller ...

[sam.t96]

Stars form from a collapsing cloud that fragments into smaller and smaller pieces. This process takes about
 
  A) 10,000 years.
  B) 25,000 years.
  C) 100,000 years.
  D) a few million years.
  E) 100 million years.

Question 2

Hydrostatic equilibrium in our Sun is the balance between:
 
  A) convection and radiation.
  B) convection and gravitation.
  C) pressure and radiation.
  D) radiation and gravitation.
  E) gravitation and pressure.

[raenoj]

Answer to Question 1

D

Answer to Question 2

E

[sam.t96]

TYSM

[tranoy]

Gracias!