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Astronomy
1st Edition
ISBN: 9781938168284
Author: Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher: OpenStax
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Textbook Question
Chapter 14, Problem 9E
Why are some planets and moons more geologically active than others?
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Students have asked these similar questions
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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 range of density for the outer planets (in g/cm3)?
1.2 to 5.5
2.2 to 5.5
2.2 to 6.5
3.3 to 7.2
none of these
What is the smallest size crater on the moon?
240 km
24 km
2.4 km
1 km
much smaller than 1 km
Chapter 14 Solutions
Astronomy
Ch. 14 - A friend of yours who has not taken astronomy sees...Ch. 14 - In what ways are meteorites different from...Ch. 14 - How are comets related to meteor showers?Ch. 14 - What do we mean by primitive material? How can we...Ch. 14 - Describe the solar nebula, and outline the...Ch. 14 - Why do the giant planets and their moons have...Ch. 14 - How do the planets discovered so far around other...Ch. 14 - Explain the role of impacts in planetary...Ch. 14 - Why are some planets and moons more geologically...Ch. 14 - Summarize the origin and evolution of the...
Ch. 14 - Why do meteors in a meteor shower appear to come...Ch. 14 - What methods do scientists use to distinguish a...Ch. 14 - Why do iron meteorites represent a much higher...Ch. 14 - Why is it more useful to classify meteorites...Ch. 14 - Which meteorites are the most useful for defining...Ch. 14 - Suppose a new primitive meteorite is discovered...Ch. 14 - How do we know when the solar system formed?...Ch. 14 - We have seen how Mars can support greater...Ch. 14 - Present theory suggests that giant planets cannot...Ch. 14 - Why are meteorites of primitive material...Ch. 14 - How long would material take to go around if the...Ch. 14 - Consider the differentiated meteorites. We think...Ch. 14 - Estimate the maximum height of the mountains on a...
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- Why is Pluto not considered a major planet, and what other peculiarity distinguishes it from the major planets?arrow_forwardWhy is almost every solid surface in the Solar System scarred by craters?arrow_forward20 Approximately how many other planetary systems have been discovered to date? A Tens of thousands B) Tens C Hundreds D Thousands E Millionsarrow_forward
- I would like you to compare the size of some of the largest moons of the solar system to their host planets. Using diameters of 12,700 km, and 140,000 km, 116,000 km for Earth, Jupiter, and Saturn respectively, please provide the ratios of the following moons to their host planets (you can use Table 12.1 from the book to get the diameters of the moons): Luna (Earth's moon), Io, Callisto, Ganymede, Europa, and Titan. After collecting those ratios, please tell me one thing that you notice that stands out about those results.arrow_forwardAssuming a spherical shape and a uniform density of 2000 kg/m³, calculate how small an icy moon of one of the outer planets would have to be before a 40 m/s (about 90 mph) fast- ball could escape.arrow_forwardWhy do you think the outer planets have such extensive systems of rings and moons, while the inner planets do not?arrow_forward
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