Chapter 11 Notes
Chapter 11 Notes ASTR-1010-01
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This 1 page Class Notes was uploaded by Raven Hamilton on Tuesday April 19, 2016. The Class Notes belongs to ASTR-1010-01 at Clayton State University taught by Bram Boroson in Spring 2016. Since its upload, it has received 16 views. For similar materials see Solar System Astronomy in Art at Clayton State University.
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Date Created: 04/19/16
Chapter 11 Notes Saturn’s moon, Titan, is too cold for liquid water to exist, has an atmosphere that is mostly nitrogen, the atmosphere is thick which hides the surface from view, and there is a possibility that it has a ocean of liquid ethane. The rings of the Jovian planets are made of individual particles of rock or ice that orbit in accord with Kepler's laws: inner ring particles orbiting faster, and outer ring particles orbiting slower. The orbits of the rings are circular and lie near the planet’s equatorial plane. These rings also lie with the Roche zone of the planet. They all have gaps and ringlets. Resonance when two periods are in a simple proportion, and line up regularly. Resonance helps explain why three of Jupiter’s moons are hot inside, the gaps in Saturn’s rings, and the gaps in the asteroid belt. Saturn has a smaller mass than Jupiter, but is almost as big because Jupiter’s mass compresses it more and increasing its density. The Great Red Spot on Jupiter is a continuous, high pressure storm. Asteroids in orbital resonance with Jupiter experience bulge periods. Triton is orbiting backwards, everything else in the solar system orbits counterclockwise while Triton orbits clockwise. Jupiter 5.20 AU distance from the Sun, mass of 318 Earths, density of 1.33 g/cm3, and composed mostly of Hydrogen and Helium. Saturn 9.54 AU distance from the Sun, mass of 95 Earths, density of 0.71 g/cm3, and composed mostly of Hydrogen and Helium. Uranus 19.2 AU distance from the Sun, mass of 14 Earths, density of 1.24 g/cm3, and composed of Hydrogen compounds, rock, Hydrogen, and Helium. Neptune 30.1 AU distance from the Sun, mass of 17 Earths, density of 1.67 g/cm3, and composed of Hydrogen compounds, rock, Hydrogen, and Helium. The densities of Neptune and Uranus are denser than those of Jupiter and Saturn due to the higher proportion of hydrogen compounds and rocks. The composition of Neptune and Uranus is significantly different from Jupiter and Saturn because of accretion. It is thought that during the compression of the solar nebula, when the planets were formed, accretion occurred more rapidly in the denser regions of the solar nebula closer to the Sun. This caused Jupiter and Saturn to capture more gas than Neptune and Uranus. Because Jupiter and Saturn have nearly identical composition, Jupiter’s higher density indicates that its interior is more compressed than Saturn’s. This greater compression is due to gravity, which is stronger for Jupiter because of its greater mass.
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