s and planets are formed from 1) The Solar Nebular Theory shows that star A) The
ID: 289517 • Letter: S
Question
s and planets are formed from 1) The Solar Nebular Theory shows that star A) The collapse of a Giant Molecular cloud due B) The collapse of a Giant Molecular cloud due to the shock force passing through the cloud C) The expansion of a Giant Molecular cloud due to the electrostatic charges. D) The rapid expansion of a Giant Molecular cloud. to the force of gravity of the Enter 2) The process of differentiation results in, A) Heavier materials sinking to the surface of still molten planet. B) All material staying where they are in a still molten planet. C) Heavier materials rising to the surface of a still molten planet. D) Heavier material sinking to the center of a still molten planet. ) A heavily cratered surface, ) indicates the surface is young. indicates the surface is ancient around 4 billion years old. ) indicates nothing about the age of the surface. ) indicates the surface is middle agedExplanation / Answer
The collapse of a giant molecular cloud due to force of gravity.The stars form in massive and dense clouds of molecular hydrogen. These clouds are gravitationally unstable, and matter coalesces within them to smaller denser clumps, which then rotate, collapse, and form stars and planets.
Heavier material sinking to the center of a still molten core. The differentiation implies that the Planet more-or-less completely melted at some time early in its history, so that heavy materials could sink to the bottom, and light materials float to the top.
indicates the surface is ancient around 4 billion years old . A heavily cratered surface indicates that the planet is not currently active, and has not been active for billions of years. The longer a surface is exposed to impacts, the more heavily cratered it will be. A young surface will appear relatively free of craters, while an old surface will contain many craters.
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