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Author Question: What can we learn about a star from a life track on an H-R diagram? A) the star's age B) the ... (Read 37 times)

acc299

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on: Jul 27, 2018
What can we learn about a star from a life track on an H-R diagram?
 
  A) the star's age
  B) the surface temperature and luminosity the star will have at each stage of its life
  C) the star's current stage of life
  D) how the star's distance from Earth varies at different times in its life

Question 2

The heavy bombardment phase of the solar system lasted
 
  A) several million years.
  B) several tens of millions of years.
  C) several hundreds of millions of years.
  D) about a billion years.
  E) to the present time.


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carolinefletcherr

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

B

Answer to Question 2

C


acc299

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Reply 2 on: Jul 27, 2018
Gracias!

ricroger

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Reply 3 on: Yesterday
Excellent

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