Foundations of Astronomy (MindTap Course List)
14th Edition
ISBN: 9781337399920
Author: Michael A. Seeds, Dana Backman
Publisher: Cengage Learning
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Chapter 23, Problem 2SOP
Neptune is about 50,000 km in diameter, and its largest moon, Triton, is about 2700 km in diameter. If you represent the planet with a ball 10 inches in diameter, how big a ball will you need to represent Triton? Triton orbits 355,000 km from Neptune. How far from Neptune would you place Triton in the model?
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You are making a scale model to visualize the relative sizes of the planets in our solar system. The scale of the model is: 1 cm = 2000 km. The radius of Saturn is 60,000 km. At what radius will Saturn appear on your scale model?
The planet Uranus was discovered in 1781, and Neptune, the next planet outward from the Sun, was discovered in 1846. Imagine you're an astronomer in 1846, and you start wondering if there's another planet out beyond Neptune. You decide to try and discover its existence using the same method that was used for Neptune. How will you do this?
Group of answer choices
You'll recruit a large number of astronomers to use their telescopes to carefully scan the sky in directions that are far from the ecliptic. The regions around the north and south celestial poles will probably be the best "hunting grounds" for the new planet.
You'll examine Uranus and Neptune very carefully, on every clear night, for several years, to see if you can find any evidence that sunlight has been reflected off of the `new' planet, then off of Uranus or Neptune, before arriving on Earth.
On rare occasions when Neptune passes in front of the Sun, as seen from Earth, you'll look carefully at the Sun (with a safe…
The table to the right gives size and distance data for the planets at a certain point in time. Calculate the scaled size and distance for each planet using a 1 to 10 billion scale model solar system.
Planet
Diameter
Distance from Sun
Mercury
4880 km
65.1 million km
Venus
12,100 km
108.8 million km
Earth
12,760 km
147.5 million km
Mars
6790 km
244.6 million km
Jupiter
143,000 km
807.2 million km
Saturn
120,000 km
1406 million km
Uranus
52,000 km
2938 million km
Neptune
48,400 km
4508 million km
Chapter 23 Solutions
Foundations of Astronomy (MindTap Course List)
Ch. 23 - Why didnt ancient astronomers know of Uranuss...Ch. 23 - Describe the location of the equinoxes and...Ch. 23 - When during Uranuss seasonal cycle does every...Ch. 23 - How were the rotation periods of Uranus and...Ch. 23 - Why is belt-zone circulation difficult to detect...Ch. 23 - Prob. 6RQCh. 23 - Prob. 7RQCh. 23 - Describe four characteristics in common among all...Ch. 23 - Describe four differences between the two ice...Ch. 23 - Prob. 10RQ
Ch. 23 - What are hypotheses for the origin of the rings of...Ch. 23 - How do the characteristics of Uranuss and Neptunes...Ch. 23 - If Uranus and Neptune had no satellites at all,...Ch. 23 - Why might the surface brightness of ring particles...Ch. 23 - Both Uranus and Neptune have a blue-green tint...Ch. 23 - How are the atmospheres of Earth and Triton...Ch. 23 - Prob. 17RQCh. 23 - When Neptune was discovered, how was its position...Ch. 23 - How can small worlds like Triton and Pluto have...Ch. 23 - Why do you suspect that Triton had a geologically...Ch. 23 - If you visited the surface of Pluto and found...Ch. 23 - What evidence can you give that Pluto and Charon...Ch. 23 - Why was Pluto reclassified as a dwarf planet?Ch. 23 - How was the discovery of Neptune not accidental?Ch. 23 - What is the maximum angular diameter of Uranus as...Ch. 23 - One way to recognize a distant planet is by...Ch. 23 - What is the orbital velocity of Miranda around...Ch. 23 - Calculate Uranuss Roche radius. Are all of Uranuss...Ch. 23 - Prob. 5PCh. 23 - What is the escape velocity from the surface of an...Ch. 23 - What is the difference in the orbital velocities...Ch. 23 - Repeat Problem 2 for Pluto. In other words,...Ch. 23 - Given the size of Tritons orbit (r = 355,000 km)...Ch. 23 - Uranus is about 26,000 km in radius, and its main...Ch. 23 - Neptune is about 50,000 km in diameter, and its...Ch. 23 - Prob. 1LTLCh. 23 - Prob. 2LTLCh. 23 - Compare the interior cutaway sketches of the four...Ch. 23 - Prob. 4LTLCh. 23 - Review Figure 21-11. Which molecules can Triton...Ch. 23 - The image to the left shows how Uranus would look...
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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
- 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_forwardA Sense of Proportion: Neptune is about 50,000 km in diameter, and its largest moon, Triton, is about 2700 km in diameter. If you represent the planet with a ball 10 inches in diameter, how big a ball will you need to represent Triton?arrow_forwardUranus is about 26,000 km in radius, and its main ring is about 51,000 km from the planets center. If you represent the planet with a ball 5 inches in radius, how far from the center would you place its main ring?arrow_forward
- Saturn is about 60,000 km in radius, and its rings are only about 0.01 km thick with ripples 100 m high. Design a really big model with Saturn 60 inches in radius (10 ft in diameter). How thick must the rings be in your model and how high can the ripples be? A sheet of paper is about 0.004 inches thick.arrow_forwardHow was the discovery of Neptune not accidental?arrow_forwardWhat is the difference between a planetesimal and a protoplanet?arrow_forward
- Why do we say that Neptune was the first planet to be discovered through the use of mathematics?arrow_forwardPresent 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_forwardWhy do we say Neptune was the first planet to be discovered through the use od mathmaticsarrow_forward
- Saturn is approximately a sphere of radius 5.85 × 10’ m. (a) What is its circumference in kilometers? km (b) What is its surface area in square kilometers? 2 km2 (c) What is its volume in cubic kilometers? km3arrow_forwardNASA Scientists want to measure the current distance between two of Jupiter's Moons, Ganymede and Europa. They set up a laser on the surface of Ganymede, shine it at a mirror on the surface of Europa and measure how long it takes for the laser light to return to a detector on the surface of Ganymede. They calculated the current distance between the two moons to be 787 million meters. How long did it take the light to make it to Europa and back? *Give answers to at least three significant figures. DO NOT submit answers in scientific notation. Use symbols for units (i.e. m, s, kg, N)*arrow_forwardCompare Titan to Rhea. Estimate the strength of surface gravity on Titan compared to the gravity on Titan. How does this affect the possibility of an atmosphere on each? Use g=GM/R2 Titan Radius: 2,575 km, Mass: 2.31 x 1021 kg Rhea Radius: 764 km, Mass: 1.35 x 1023 kgarrow_forward
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