On the Sun, what takes approximately 22 years to happen? A) ...

[krzymel]

On the Sun, what takes approximately 22 years to happen?
 
  A) The Sun takes that time to rotate on its axis.
  B) The complete sunspot cycle, including magnetic field reversals.
  C) Solar vibrations begin every 22 years.
  D) Solar activities goes from its maximum to minimum.
  E) The corona reaches its maximum temperature and ejects gas every 22 years.

Question 2

What are the characteristics of an open cluster of stars?
 
  A) mostly found above and below the galactic plane
  B) old age and millions of members
  C) a few hundred, mainly main sequence stars
  D) All stars are much more massive than our Sun.
  E) All stars are about the same age and luminosity.

[aham8f]

Answer to Question 1

B

Answer to Question 2

C

[krzymel]

Gracias!

[deja]

Thanks for the timely response, appreciate it