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Cosmic Inflation: Solving the Flatness & Horizon Problems

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question 1 of 3

This is a version of the big bang theory that accounts for the very rapid expansion of our early universe:

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1. The inability of the standard big bang theory to explain why the cosmic microwave background (CMB) radiation is so incredibly uniform throughout our universe is known as the:

2. The interesting notion that the early universe had just the right amount of matter to match critical density is known as the:

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About This Quiz & Worksheet

The quiz/worksheet combo will ask you questions relating to the formation of our universe and how it came to be.

Quiz & Worksheet Goals

These tools assess your knowledge of the following:

  • Version of the big bang theory that accounts for the rapid expansion of the early universe
  • What the flatness problem refers to
  • Form of most of the energy density in the universe
  • When the inflation of our universe occurred

Skills Practiced

  • Critical thinking - apply relevant concepts to examine information about how our universe formed and expanded in a different light
  • Information recall - access what you've learned regarding the idea that the early universe had the right amount of matter to match critical density
  • Knowledge application - use your knowledge to identify an inability of the standard big bang theory

Additional Learning

To learn more about how our early universe rapidly expanded, review the corresponding lesson titled Cosmic Inflation: Solving the Flatness & Horizon Problems. This lesson covers the following objectives:

  • Explores the horizon problem and the flatness problem
  • Examines the cosmic microwave background (CMB)
  • Discusses the theory of the inflationary universe
  • Describes how the strong and electroweak force separated and what cosmic effect this had
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