Question

1. what is the best description of the big bang?

a. a massive explosion that created everything in the universe
b. that two planets collided, creating the sun and other planets in our solar system
c. that a rapid expansion of a small, densely packed area that expanded into the universe we know now
d. an explanation of how the universe is expanding and how big it is

1. what is the main purpose of this passage?

a. to inform the reader that there is scientific evidence that supports the big bang theory
b. to prove that the big bang never happened
c. to explain why scientists continue to search for evidence of the big bang
d. to explain that there are fewer galaxies than scientists had at first suspected

Explanation:

Question 4

• Option A: The Big Bang was not an explosion in the traditional sense, so this is incorrect.
• Option B: The Big Bang is about the origin of the universe, not the solar system from colliding planets.
• Option C: The Big Bang theory describes a rapid expansion of a very dense, small region into the universe we observe, which matches the theory.
• Option D: The Big Bang is about the origin of the universe, not just explaining its expansion and size.

• Option A: If the passage's main purpose is to inform about scientific evidence supporting the Big Bang theory, this is a valid purpose for an informational passage on the topic.
• Option B: The Big Bang is a widely accepted theory with evidence, so proving it never happened is against scientific consensus and unlikely.
• Option C: The question is about the main purpose; explaining why scientists search for evidence is more about the process, not the main purpose of a passage on the Big Bang theory's evidence.
• Option D: The number of galaxies is not the main focus of a passage about the Big Bang theory's purpose.

Answer:

C. That a rapid expansion of a small, densely packed area that expanded into the universe we know now.

Question 5