The Cosmic Perspective (9th Edition)
9th Edition
ISBN: 9780134874364
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Textbook Question
Chapter 8, Problem 12EAP
What is the leading hypothesis for the Moon’s formation, and what evidence supports this hypothesis?
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Which of the following is least reasonable regarding impact craters?
Group of answer choices
The size and shape of the crater and the amount of material excavated depends on factors such as the velocity and mass of the impacting body and the geology of the surface.
Craters are most often are circular but more elongate craters can be produced with impactors striking the surface at very low angles.
The Moon has more craters than the Earth because of its strong tidal force on the impactors.
Objects from space typically hit Earth at about 20 km/s ande produce craters that can be approximately 20 times larger in diameter than the impacting objects.
The faster the incoming impactor, the larger the crater.
Why are Mercury and the Moon much more cratered than Earth?
Explain how the number of craters indicates the age of a surface.
Hellas Planitia includes the word "planitia" which is the latin word for "plain" in its name.
The name would seem to indicate thats Hellas Planitia is a low lying plain, yet it is clearly a crater, and a very large one at that.
The most probable reason for this discrepancy in its name is because:
a. It is a simple naming error that for some reason has so far escaped correction.
b. There is a disagreement among astronomers about the true nature of Hellas Planitia.
c. Its true nature was not apparent over 100 years ago when it was observed using ground based telescopes.
d. Astronomers really know its true nature and misconceptions among the public among the public are not of great concern to them.
Chapter 8 Solutions
The Cosmic Perspective (9th Edition)
Ch. 8 - Prob. 1VSCCh. 8 - Prob. 2VSCCh. 8 - Prob. 3VSCCh. 8 -
Briefly describe the four major features of our...Ch. 8 - What is the nebular theory, and why is it widely...Ch. 8 - What do we mean by the solar nebula? What was it...Ch. 8 -
4. Describe the three key processes that led the...Ch. 8 - List the approximate condensation temperature and...Ch. 8 - What was the frost line? Which ingredients...Ch. 8 - Briefly describe the process by which terrestrial...
Ch. 8 - How was the formation of jovian planets similar to...Ch. 8 - What is the solar wind, and what roles did it play...Ch. 8 - How did planet formation lead to the existence of...Ch. 8 - What was the heavy bombardment, and when did it...Ch. 8 - What is the leading hypothesis for the Moon’s...Ch. 8 - Prob. 13EAPCh. 8 - How old is the solar system, and how do we know?Ch. 8 - Surprising Discoveries? Suppose we found a solar...Ch. 8 - Prob. 16EAPCh. 8 - Surprising Discoveries? Suppose we found a solar...Ch. 8 - Prob. 18EAPCh. 8 - Prob. 19EAPCh. 8 - Prob. 20EAPCh. 8 - Prob. 21EAPCh. 8 - Prob. 22EAPCh. 8 - Prob. 23EAPCh. 8 - Prob. 24EAPCh. 8 - Choose the best answer to each of the following....Ch. 8 - Choose the best answer to each of the following....Ch. 8 - Choose the best answer to each of the following....Ch. 8 - Prob. 28EAPCh. 8 - Choose the best answer to each of the following....Ch. 8 - Choose the best answer to each of the following....Ch. 8 - Prob. 31EAPCh. 8 - Choose the best answer to each of the following....Ch. 8 - Choose the best answer to each of the following....Ch. 8 - Choose the best answer to each of the following....Ch. 8 - Explaining the Past. Is it really possible for...Ch. 8 - Prob. 37EAPCh. 8 - Prob. 38EAPCh. 8 - An Early Solar Wind. Suppose the solar wind had...Ch. 8 - Angular Momentum. Suppose our solar nebula had...Ch. 8 - Two Kinds of Planets. The jovian planets differ...Ch. 8 - Prob. 43EAPCh. 8 - Prob. 44EAPCh. 8 - Prob. 45EAPCh. 8 - Prob. 46EAPCh. 8 - Lucky to Be Here? Considering the overall process...Ch. 8 - Radiometric Dating. You are dating rocks by their...Ch. 8 - Lunar Rocks. You are dating Moon rocks based on...Ch. 8 - Carbon-14 Dating. The half-life of carbon-14 is...Ch. 8 - Prob. 51EAPCh. 8 - Icy Earth. How massive would Earth have to have...Ch. 8 - What Are the Odds? The fact that all the planets...Ch. 8 - Spinning Up the Solar Nebula. The orbital speed of...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Provide evidence to support a hypothesis about whether or not the Moon has plate tectonics.arrow_forwardThe lunar highlands have about ten times more craters in a given area than do the maria. Does this mean that the highlands are 10 times older? Explain your reasoning.arrow_forwardWe believe that chains of comet fragments like Comet Shoemaker-Levy 9’s have collided not only with the jovian planets, but occasionally with their moons. What sort of features would you look for on the outer planet moons to find evidence of such collisions? (As an extra bonus, can you find any images of such features on a moon like Callisto? You can use an online site of planetary images, such as the Planetary Photojournal, at photojournal.jpl.nasa.gov.)arrow_forward
- If rocks obtained from the moon indicate an age of 4.5 billion years and the oldest rocks from Earth indicate an age of 4.4 billion years is the moon necessarly older than earth? Why or Why not?arrow_forwardJupiter's moon Metis has a radius of only 20 km, and a mass of 9 x 1016 kg. Answer the following: a) Calculate this moon's average density. b) Based on your result above, would you say that Metis is made primarily of rock or ice? Justify your answer. (Hint: Density of ice is 920 kg/m3)arrow_forward
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