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Author Question: What are the outward forces that act on a star? What are the inward forces? How do these compare? ... (Read 5 times)

ericka1

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on: Jul 29, 2018
What are the outward forces that act on a star? What are the inward forces? How do these compare?
 
  What will be an ideal response?

Question 2

The H-R Diagram, an important tool of astronomers, relates stellar temperature to stellar
 
  A) distance.
  B) mass.
  C) color.
  D) density.
  E) luminosity.


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ngr69

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: The outward forces on a star are radiation pressure caused by nuclear fusion in the stellar cores. This tends to blow up the star. The inward forces are due to gravitation, which tend to compress the star. How do these opposite forces compare? They're equal, and determine the size of the star. When one becomes stronger than the other, the size of the star changes.

Answer to Question 2

Answer: E


ericka1

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


ngr69

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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