GK
SOLAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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According to the nebular hypothesis (and scientific evidence), what forms in the very center of a nebula that has been spinning and collapsing?
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A protosun
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A planet
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A protoplanet
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A planetesimal
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Explanation:
Detailed explanation-1: -Over millions of years, giant molecular clouds are prone to collapse and fragmentation. These fragments then form small, dense cores, which in turn collapse into stars. The cores range in mass from a fraction to several times that of the Sun and are called protostellar (protosolar) nebulae.
Detailed explanation-2: -As a result of the spinning, the nebula flattens out to form a disk, much like a clump of dough which is spun into a pizza. As it continues to flatten and spin, the nebula becomes denser and hotter, particularly in the center. The dense, hot center eventually forms into a star, the Sun.
Detailed explanation-3: -Nebulae are made of dust and gases-mostly hydrogen and helium.
There is 1 question to complete.