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Author Question: What is the source of the large dust shells seen around some red giants and red supergiants? A) ... (Read 44 times)

dalyningkenk

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on: Jul 27, 2018
What is the source of the large dust shells seen around some red giants and red supergiants?
 
  A) Leftover material from their formation
  B) Debris left behind by a supernova
  C) Material from winds from these same stars
  D) Debris left behind by passing comets
  E) Star-forming molecular clouds

Question 2

Sunspots are dark splotches on the Sun. Which statement is true?
 
  A) They are hotter than the surrounding areas of the Sun.
  B) They are extremely cold objects, as cold as Pluto.
  C) They are extremely hot, but cooler than the surrounding areas of the Sun.
  D) They are solid bodies floating on the surface of the Sun.
  E) They are associated with areas of very low magnetic fields.


manuelcastillo

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Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

C


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