Question 1 Answer saved Points out of2.00 P Flag question In the beginning of its formation, Earth was elect one: D a. covered with large mountains but no oceans b. was just a giant ball of fire, the core had yet to form and it was still being hit by random space deb Big Bang explosion C. was covered in ice, because of its distance from the sun and inability to retain heat, like other plan- just one big ball of frozen ice Clear my choice

Question 1 Answer saved Points out of2.00 P Flag question In the beginning of its formation, Earth was elect one: D a. covered with large mountains but no oceans b. was just a giant ball of fire, the core had yet to form and it was still being hit by random space deb Big Bang explosion C. was covered in ice, because of its distance from the sun and inability to retain heat, like other plan- just one big ball of frozen ice Clear my choice

Horizons: Exploring the Universe (MindTap Course List)

14th Edition

ISBN:9781305960961

Author:Michael A. Seeds, Dana Backman

Publisher:Michael A. Seeds, Dana Backman

Chapter20: Astrobiology: Life On Other Worlds

Section: Chapter Questions

Problem 2P: If you represent Earth’s history by a line 1 m long, how long a segment would represent the 400...

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What does the term differentiated mean when applied to a planet? Would you expect to find that planets are usually differentiated? Why?
If you represent Earth’s history by a line 1 m long, how long a segment would represent the 400 million years since life moved onto the land? How long a segment would represent the 4-million-year history of human life?
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Why do small planets cool faster than large planets? Choose any two of the five Terrestrial worlds and calculate for each one the ratio of its surface area to its volume. Why is this ratio important? (Hint: Does this ratio have anything to do with the ability of a planet to lose internal heat?) (Note: The surface area of a sphere is 4r2, and the volume of a sphere is 43r3.)
In what ways is Earth unique among the Terrestrial planets?
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