Chapter 11 - Plantary Adornments - Moons and Rings - SU 2019 - Copy.pdf

This preview shows page 1 - 12 out of 135 pages.

Chapter 11Planetary AdornmentsMoon and Rings
Moons, Part 1Dozens of “worlds” of rock and ice exist in our s.s.; some large, somesmall. ~200 moons!Liquid water under some surfaces.
Moons, Part 2
Moons, Part 3The moons are made of rock, ice, or both.Some were formed by accretion and differentiation.They have many diverse properties, only partially understood.
Regular Moons, Part 1Most of the larger moons formed with their planets through theprocesses of accretion and differentiation.These are calledregular moons.They revolve around their planets in the same direction as theyrotate.Almost all are tidally locked, meaning one hemisphere always facesthe planet the moon is orbiting.
Regular Moons, Part 2Other evidence for regular moons? The Galilean moonsthe large moons ofJupiter that are closest to itdecrease in density as you move outward.They are called the Galilean moons because these are the ones that Galileodiscoveredthe ones that helped proved our s.s. is heliocentric!The decrease indensity as you moveaway from the planetsuggests they wereformed in an orderlyprocess/accretiondisk, much like ours.s.
Q: As their distance from Jupiter increases,the 4 Galilean moons show a consistent
Q: As their distance from Jupiter increases,the 4 Galilean moons show a consistent
Irregular MoonsSome moons are objects that formed apart from a planet, but werelater gravitationally captured by one.These are calledirregular moons.They are often on retrograde (“backward”) orbits.Largest: Triton (below), moon of Neptune, although most are muchsmalleronly a few km across.
Check Your Understanding 11.1Which of the following isnota characteristic of regular moons?

Upload your study docs or become a

Course Hero member to access this document

Upload your study docs or become a

Course Hero member to access this document

End of preview. Want to read all 135 pages?

Upload your study docs or become a

Course Hero member to access this document

Term
Summer
Professor
Dr. Gomez
Tags
Planet, Neptune, Natural satellite, Irregular Moons

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture