ESS COSMC PERSPCT ALC&MOD W/ACCESS
7th Edition
ISBN: 9780134773629
Author: Bennett
Publisher: PEARSON
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Textbook Question
Chapter 6, Problem 37EAP
A Cold Solar Nebula. Roles: Scribe (takes notes on the group’s activities). Proposer (proposes explanations to the group). Skeptic (points out weaknesses in proposed explanations), Moderator (leads group discussion and makes sure everyone contributes). Activity: In our solar system, the frost line was located between Mars and Jupiter, but study of other solar systems suggests that our solar system could have turned out differently. Consider a hypothetical scenario in which the solar nebula was not cleared away by the solar wind until the entire disk of gas had cooled to 50 K.
- Make a list of ingredients that will condense at 50 K.
- Make a list of ways in which the terrestrial planets might have turned out differently under this alternative formation scenario.
- Repeat part (b) for the Jovian planets.
- Discuss the likelihood that your predicted changes would match the actual characteristics of this alternative solar system.
- Come up with additional “what if” scenarios, discussing various other ways in which the planets might have turned out differently.
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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
1) How massive would Earth had been if it had accreted hydrogen compounds in addition to the sme properties listed in table 7.1? (Assume the same properties of the ingredients as listed in the table)
2) Now imagine that Earth had been able to capture hydrogen and helium gas in the same proportions as listed in the table. How massive would it have been?
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
Chapter 6 Solutions
ESS COSMC PERSPCT ALC&MOD W/ACCESS
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_forwardWhich 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_forward
- How 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_forwardWhat is a biomarker? Give some possible examples of biomarkers we might look for beyond the solar system.arrow_forwardSuppose that Earth grew to its present size in 1 million years through the accretion of particles averaging 100 grams each. On the average, how many particles did Earth capture per second? (Note: Earth’s mass is 6.01027 grams.)arrow_forward
- If 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? Do you expect the most planetary system in the Universe have analogs to our Solar System’s asteroid belt and Kuiper Belt? Would all planetary systems show signs of an age of heavy bombardment? If the solar nebula hypothesis is correct, do you think there are more planets in the Universe than stars? Why or why not?arrow_forwardHow does the solar nebula theory explain the significant density difference between the Terrestrial and Jovian planets?arrow_forwardOrder the following steps in the formation of a Terrestrial planet chronologically: gravitational collapse, accretion, out-gassing, condensation, and differentiation.arrow_forward
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