Mastering Astronomy with Pearson eText -- ValuePack Access Card -- for The Essential Cosmic Perspective
7th Edition
ISBN: 9780321928375
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Chapter 6, Problem 36EAP
Unanswered Questions. As discussed in this chapter, the nebular theory answers many but not all questions about the origin of our solar system. Choose one important but unanswered question about the origin of our solar system and write two or three paragraphs in which you discuss how we might answer this question in the future. Be as specific as possible, focusing on the type of evidence necessary to answer the question and how the evidence could be gathered. What are the benefits of finding answers to this question?
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We think the terrestrial planets formed around solid “seeds” that later grew over time through the accretion of rocks and metals.
a) Suppose the Earth grew to its present size in 1 million years through the accretion of particles averaging 100 grams each. On average, how many particles did the Earth capture per second, given that the mass of the Earth is = 5.972 × 10 ^24 kg ?
b) If you stood on Earth during its formation and watched a region covering 100 m^2, how many impacts would you expect to see in one hour. Use the impact rate you calculated in part a. You’ll need the following as well: the radius of the Earth is = 6.371 × 10 ^6 m and the surface area of the Earth is 4??^2Earth
If you stood on Earth during its formation, during which it captured about 1.4 ✕ 1011 particles per second, and watched a region covering 310 m2, how many impacts would you expect to see in an hour? (Notes: The surface area of a sphere is 4πr2. Hint: Assume that Earth had its current radius of 6,378 km.)
[......] impacts
Which of the following statements accurately describes our current understanding of the solar system?
a.
There are no metals in the solar system beyond Jupiter and its orbit.
b.
Terrestrial worlds are so small because their large atmospheres were stripped away in time by Jupiter.
c.
Jupiter and Saturn are made of strictly a combination of hydrogen and helium, and both objects lack a planetary core.
d.
Various ices can contribute to the mass of planetary cores if we are at a great enough distance from the sun.
Chapter 6 Solutions
Mastering Astronomy with Pearson eText -- ValuePack Access Card -- for The Essential Cosmic Perspective
Ch. 6 - Prob. 1VSCCh. 6 - Prob. 2VSCCh. 6 - Prob. 3VSCCh. 6 - Prob. 1EAPCh. 6 - Prob. 2EAPCh. 6 - Prob. 3EAPCh. 6 - What are the basic differences between terrestrial...Ch. 6 - Prob. 5EAPCh. 6 - Prob. 6EAPCh. 6 - Prob. 7EAP
Ch. 6 - Describe the four categories of materials in the...Ch. 6 - Prob. 9EAPCh. 6 - Prob. 10EAPCh. 6 - Prob. 11EAPCh. 6 - Prob. 12EAPCh. 6 - What is the leading hypothesis for the Moon’s...Ch. 6 - Prob. 14EAPCh. 6 - Prob. 15EAPCh. 6 - Prob. 16EAPCh. 6 - Prob. 17EAPCh. 6 - Prob. 18EAPCh. 6 - Prob. 19EAPCh. 6 - Prob. 20EAPCh. 6 - Prob. 21EAPCh. 6 - Prob. 22EAPCh. 6 - Prob. 23EAPCh. 6 - Prob. 24EAPCh. 6 - Prob. 25EAPCh. 6 - Prob. 26EAPCh. 6 - Prob. 27EAPCh. 6 - Which of the following did not occur during the...Ch. 6 - Prob. 29EAPCh. 6 - Prob. 30EAPCh. 6 - Leftover ice-rich planetesimals are called (a)...Ch. 6 - Prob. 32EAPCh. 6 - Prob. 33EAPCh. 6 - Prob. 34EAPCh. 6 - Prob. 35EAPCh. 6 - Unanswered Questions. As discussed in this...Ch. 6 - A Cold Solar Nebula. Roles: Scribe (takes notes on...Ch. 6 - True or False. Decide whether each statement is...Ch. 6 - Planetary Tour. Based on the brief planetary tour...Ch. 6 - Patterns of Motion. In one or two paragraphs,...Ch. 6 - Solar System Trends. Study the planetary data in...Ch. 6 - 42. Two Kinds of Planets. The jovian planets...Ch. 6 - An Early Solar Wind. Suppose the solar wind had...Ch. 6 - History of the Elements. Our bodies (arid most...Ch. 6 - Rocks from Other Solar Systems. Many leftovers’...Ch. 6 - Radiometric Dating. You are dating rocks by their...Ch. 6 - Lunar Rocks. You are dating Moon rocks based on...Ch. 6 - Carbon-14 Dating. The half-life of carbori-14 s...Ch. 6 - Prob. 49EAPCh. 6 - Prob. 50EAPCh. 6 - Lucky to Be Here? Considering the overall process...Ch. 6 - Prob. 52EAPCh. 6 - Prob. 53EAP
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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
- Describe the solar nebula, and outline the sequence of events within the nebula that gave rise to the planetesimals.arrow_forwardWhat can we learn about the formation of our solar system by studying other stars? Explain.arrow_forwardHow does the solar nebula theory explain the orbits of the major planets? Dwarf planets? Does it explain the rotations of the planets? Why or why not?arrow_forward
- Which step(s) listed in the previous question can be eliminated in models that form Jovian planets in thousands of years, a time frame that solves the Jovian problem? Order the following steps in the formation of a Terrestrial planet chronologically: gravitational collapse, accretion, outgassing, condensation, and differentiation.arrow_forwardHow do terrestrial and giant planets differ? List as many ways as you can think of.arrow_forwardOrder the following steps in the formation of a Terrestrial planet chronologically: gravitational collapse, accretion, out-gassing, condensation, and differentiation.arrow_forward
- What is comparative planetology and why is it useful to astronomers?arrow_forwardHow does the solar nebula theory explain the significant density difference between the Terrestrial and Jovian planets?arrow_forwardDescribe the Nebular Theory. Include A) what it is, B)what happened, and C) at least three lines of evidence to support it.arrow_forward
- We believe that all of the terrestrial planets had similar histories when it comes to impacts from space. Explain how this idea can be used to date the formation of the martian highlands, the martian basins, and the Tharsis volcanoes. How certain are the ages derived for these features (in other words, how do we check the ages we derive from this method)?arrow_forwardHow do the planets discovered so far around other stars differ from those in our own solar system? List at least two ways.arrow_forwardIf you could visit another planetary system while the planets are forming, would you expect to see the condensation sequence at work, or do you think that process was most likely unique to our Solar System? How do the properties of the extrasolar planets discovered so far affect your answer?arrow_forward
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