12/23/2023 0 Comments Tidal heating io![]() On the surface of Io, 400 active volcanoes. Question: Saturn’s rings are composed of _. Tidal heating: Io Io is one of the four Galilean satellites of Jupiter that were first seen by Galilei in 1609. Unlike Earth, where most of its internal heat is released by conduction through the crust, on Io internal heat is released via volcanic activity and generates the satellite's high heat flow (global total: 0.61.6 × 10 14 W. No Jovian PlanetsĪnswer: Solid surface under a thick atmosphere This varying tidal pull also produces friction in Io's interior, enough to cause significant tidal heating and melting. Question: Sort each of the planetary properties below based on whether they apply to some, all, or none of the four jovian planets in our solar system. All Four Jovian PlanetsĪnswer: - Approximately 10 Earth-mass core Question: Sort each of the planetary properties below based on whether they apply to some, all, or none of the four jovian planets in our solar system. We use the tidal heating model previously applied to the interior of Io 81,82,83,84 and the TRAPPIST-1 planets 85, as implemented within the open-source tool melt. Jupiter and Saturn OnlyĪnswer: - Composed mostly of hydrogen and helium ![]() What additional information, if any, would we need to decide whether these moons experience tidal heating?Īnswer: We need to know their orbital periods. Suppose that future observations show that one of these planets has two orbiting moons. Question: We now know of many Jupiter-size planets around other stars. However, Europa experiences less tidal heating than Io, because Europa _ than Io. Question: Orbital resonance also gives Europa an elliptical orbit, so it experiences tidal heating, too. What observational evidence confirms that tidal heating is important on Io? Question: We cannot see tidal forces or tidal heating rather, we predict that they must occur based on the orbital characteristics of the moons. This orbital resonance causes Io to have a more elliptical orbit than it would otherwise, because _.Īnswer: Io, Europa and Ganymede periodically return to the same orbital positions, creating the same gravitational tugs This elliptical orbit, in turn, is a result of the orbital resonance among Io, Europa, and Ganymede. Question: As you saw in Part A, Io’s elliptical orbit is necessary to its tidal heating. Question: Io experiences tidal heating primarily because _.Īnswer: its elliptical orbit causes the tidal force to vary as Io orbits Jupiter. ![]()
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