out of these stages ...which are ongoing or occur simultaneously ?? indicate ans
ID: 119885 • Letter: O
Question
out of these stages ...which are ongoing or occur simultaneously ?? indicate answers
A: Cloud of gas rotates faster and faster as it collapses due to the conservation of angular momentum.
B: Motions push smaller grains of material back and forth past larger grains; smaller grains stick to larger grains.
C: Cloud of interstellar gas starts to collapse under the force of its own self-gravity.
D: Gravitational potential energy of collapsing gas cloud is converted into heat and radiative energy.
E: Material makes its final inward plunge, landing on a thin, rotating accretion disk.
F: Planetesimals continue to accrete material until they become large enough to become planets.
G: Planetesimals form that are massive enough to have gravity that begins to attract nearby bodies.
H: Inner parts of the flattening cloud begin to fall freely inward, raining down on growing objects at the center.
Explanation / Answer
The stages occuring simultaneously are:
E. Material makes its final inward plunge, landing on a thin, rotating accretion disk.
H. Inner parts of the flattening cloud begin to fall freely inward, raining down on growing objects at the center.
G. Planetesimals form that are massive enough to have gravity that begins to attract nearby bodies.
B. Motions push smaller grains of material back and forth past larger grains; smaller grains stick to larger grains.
F. Planetesimals continue to accrete material until they become large enough to become planets.
Actually younger stars gather material from their surrounding clouds of dust and gas, the material forms a flat, spinning disk around the star. Planets begin their journey within the disk and through gravitational force pull in more material and through this process the star also simultaneously continue to grow more massive.
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