All four ring systems orbit the equators of Jovian planets outside their Roche limits
Indicate whether the statement is true or false
FALSE
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If the Sun's core suddenly shrank a little bit, what would happen in the Sun?
A) The core would heat up, fusion rates would increase, the core would re-expand. B) The core would cool off and continue to shrink as its density increased. C) The density of the core would decrease, causing the core to cool off and expand. D) The core would heat up, causing it to radiate so much energy that it would shrink even more.
Which of the following describes erosion?
A) the excavation of bowl-shaped depressions by asteroids or comets striking a planet's surface B) the eruption of molten rock from a planet's interior to its surface C) the disruption of a planet's surface by internal stresses D) the wearing down or building up of geological features by wind, water, ice, and other phenomena of planetary weather
The tectonic surface features we see on Triton are similar to the grooves of Ganymede
Indicate whether the statement is true or false
Why aren't heavier elements much larger than lighter elements?
a. Larger nuclear forces pull the electrons into closer orbits. b. Larger gravitational forces pull electrons into closer orbits. c. The larger positive charge in the nucleus pulls the electrons into closer orbits. d. Larger magnetic forces pull electrons into closer orbits.