Answered: As the universe expands, which type of…

As the universe expands, which type of cosmic energy has a density that falls off most quickly? 1. Dark energy density 2. Dark matter density 3. Normal matter density 4. Radiation energy density

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter18: The Universe

Section: Chapter Questions

Problem 40SA: State three experimental findings that support the Big Bang model of the universe.

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Concept explainers

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.

Question

As the universe expands, which type of cosmic energy has a density that falls off most quickly?

1. Dark energy density

2. Dark matter density

3. Normal matter density

4. Radiation energy density

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State three experimental findings that support the Big Bang model of the universe.
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The density of the universe is a. equal to the critical density if the universe is closed. b. equal to the critical density if the universe is flat. c. greater than the critical density if the universe is flat. d. greater than the critical density if the universe is open. e. none of the above.
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