Which is the first step in building a solar system from a solar nebula?

Answer 1

They are collapse (gravitational disturbance), condensation of matter, and accretion of major bodies. Smaller bodies may continue to accrete, break up, or be absorbed by larger masses.

The 6 stages of formation are:

1. Solar Nebula

2. Planetesimals Form

3. Planetesimals accrete into protoplanets

4. Terrestrial Planets form

5. Gas Giants Form

6. Formation or organization of smaller objects (moons, asteroids, comets)

In stage 1, a nebula is compressed by gravitational disturbances, which concentrates mass in some areas. Nearby dust and gas is drawn in and begins to collect into a spinning disk shape. Enough mass collects to compress hydrogen nuclei and initiate fusion.

In stages 2 and 3, small grains of matter accrete within the disk to form planetesimals, and then larger protoplanets. Some will collide and merge, others will be broken up.

In stage 4 to 6, planets clear out their orbits. Material moving too quickly near the edge cannot be drawn in closer, but can coalesce into objects (ice planets and comets).

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Answer 2

1. Interstellar cloud of gas and dust

Analysis of other clouds

× H about 71%

× He about 27%

× H based compound 1.4%

× Could flattens in into a disk

Differentiation of solar system

× Temperature controlled condensation

Inner solar system too hot far water gases condense

× Frost

Outer system is cooler, ice, gases, silicates

2. Accretion

Planetesimals

3. Bombardment of planetesimals

4. Formation of atmosphere

5. Statellite formation

6. Cleaning up solar system final state

Answer 3

An explosion disturbs the gas and dust in the nebula.

Answer 4

an explosion disturbs the dust in the nebula

Answer 5

an explosion disturbs the gas and dust in the nebula

Answer 6

An explosion disturbs the gas and dust in the nebula

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