Essential Cosmic Perspective
9th Edition
ISBN: 9780135795033
Author: Bennett
Publisher: PEARSON
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Textbook Question
Chapter 6, Problem 31EAP
Leftover ice-rich planetesimals are called (a) comets. (b) asteroids. (c) meteorites.
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Which of the following statements is correct?
a. The formation of planets stopped because the solar nebula got cooler
c. The formation of planets stopped because the solar nebula ran out of planetesimals
d. The formation of planets stopped because the solar nebula spinning was slowing down
e. The formation of planets stopped because the young Sun's strong solar wind swept away material not yet accreted onto the planets
Choose the best answer
b. Terrestrial planets are further from the Sun, more dense and have fewer moons
c. Terrestrial planets are closer to the sun, less dense and have fewer moons
d. Terrestrial planets are closer to the Sun, more dense and have fewer moons
e. Jovian planets are closer to the Sun, less dense and have more moons
f. Jovian planets are further from the Sun, more dense and have more moons
What is the frost line in the solar nebula? Explain how temperature differences led to the formation of two distinct types of planets.
Chapter 6 Solutions
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 - The nebular theory holds that (a) our solar system...Ch. 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 - Group Discussion: Who Named the Planets? The names...Ch. 6 - Planetary Priorities. Suppose you were in charge...Ch. 6 - Explaining the Past. Test the nebular theory...Ch. 6 - Unanswered Questions. As discussed in this...Ch. 6 - Group Activity: A Cold Solar Nebula. The excess...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 - Current Spacecraft Mission. Find a list of current...Ch. 6 - Prob. 50EAPCh. 6 - Lucky to Be Here? Considering the overall process...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 - What Are the Odds? The fact that all the planets...
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- Describe the solar nebula, and outline the sequence of events within the nebula that gave rise to the planetesimals.arrow_forwardWhere would you look for some “original” planetesimals left over from the formation of our solar system?arrow_forwardWhich meteorites are the most useful for defining the age of the solar system? Why?arrow_forward
- Present theory suggests that giant planets cannot form without condensation of water ice, which becomes vapor at the high temperatures close to a star. So how can we explain the presence of jovian-sized exoplanets closer to their star than Mercury is to our Sun?arrow_forwardWhat is the difference between a planetesimal and a protoplanet?arrow_forwardWhy is Pluto not considered a major planet, and what other peculiarity distinguishes it from the major planets?arrow_forward
- Explain why the planet Venus is differentiated, but asteroid Fraknoi, a very boring and small member of the asteroid belt, is not.arrow_forwardAccording to the chart below, how do the gas giants differ from the terrestrial planets? THE TERRESTRIAL PLANETS THE GAS GIANTS MERCURY MARS JUPITER SATURN URANUS NEPTUNE VENUS EARTH ROCK ROCK ROCK ROCK INNER CORE INNER CORE CORE SIren/ Nickel CORE Iron/ WATER WATER WATER Nickel OUTER CORE OUTER CORE METALLIC U HYDROGEN METALLIC WATER MANTLE Reck HYDROGEN MANTLE Rock MANTLE Reck CORE SIren/ Silicates Silicates Silicates Nickel HYDROGEN GAS HYDROGEN GAS HYDROGEN HYDROGEN GAS GAS SURFACE SURFACE SURFACE SURFACE O The gas giants do not have solid surfaces. O The gas giants have an iron core. O The gas giants lack hydrogen gas. O The gas giants do not contain water.arrow_forwardWhich one of the mechanism below can NOT be responsible for providing intrinsic luminosity for planets? Gravitational settling of the hydrogen molecules. Gravitational settling of the helium atoms. Residual heat dating from the formation epoch of the planets. Decay of radio-active isotopes like uranium.arrow_forward
- Which is these facts is NOT explained by the nebular theory? There are two main types of planets: terrestrial and jovian Existance of comets and asteroids Planets orbit in the same direction and plane Number of planets of each type (4 terrestrial and 4 jovian)arrow_forwardThe Solar Nebula model introduces the concept of ‘frost line’. Where are asteroids and comets found with respect to this frost line? How is their location connected to their composition?arrow_forwardSurprisingly, the New Horizons probe took pictures of Pluto and found a. ongoing volcanic eruptions b. mountain ranges c. lakes of methane d. a lot of impact craters Pluto and other "dwarf planets" are not considered proper planets because a. they don't have any moons b. they are members of belts like the asteroid and Kuiper belts c. they don't have atmospheres d. their orbital inclinations are too high e. their orbits are too eccentric Which of these planets has never had an artificial satellite? a. Neptune b. Saturn c. Mars d. Jupiter e. Venusarrow_forward
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