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Author Question: Which of the following best describes the Milky Way Galaxy? A) a spiral galaxy with a disk about ... (Read 69 times)

storky111

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on: Jul 27, 2018
Which of the following best describes the Milky Way Galaxy?
 
  A) a spiral galaxy with a disk about 100,000 light-years in diameter and containing between 100 billion and 1 trillion stars
  B) a spherically shaped collection of stars including our solar system and about a dozen other solar systems, stretching about 4 light-years in diameter
  C) a spherically shaped collection of about 1 million stars that is about 100 light-years in diameter
  D) a spiral galaxy with a disk about a billion kilometers in diameter and containing between 100 million and 1 billion stars
  E) a spiral galaxy with a disk about 100,000 light-years in diameter and containing about 100,000 stars

Question 2

The core, mantle, and crust of a planet are defined by differences in their
 
  A) temperature. B) density. C) strength. D) geological activity.


bookworm410

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

A

Answer to Question 2

B


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