Question

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Explain the model for terrestrial planet formation.

Answer 1

The Standard Planetary Model of Earth Planet Formation is Based on Astronomy and cosmochemical observations and results of laboratory experiments, numerical calculations, and  simulation. In this model, the planets grow in a series of steps starting from μm size dust grain found in protoplanetary disks. Dust particles easily stick together aggregate of mm to cm size. Some of them are heated to form chondrules. Beyond growth especially in turbulent disks, the meter size by pairwise sticking becomes a problem. It also prevents the formation of planetesimates directly in the gravitationally unstable dust layer. Turbulence concentration can lead to the formation of a gravity bound mass a planet of 10 to 1000 km. 
Dynamic interaction between planets gives maximum Opposing the most favorable trajectory for further growth, leading to runaway and wharf control Growth and formation of Mars-sized planet embryos from the moon. Large embryo gets real atmosphere, speed up trace capture. The embryo also interacts properly with It leads to gas disc, trajectory correction and movement. When will Shantou growth stop ,the planets are depleted. Embryos develop cross trajectories and occasionally collide Leave a handful of planets in orbits at wide distances. The moon probably formed by such a collision. Most stages of planet formation probably occurred in the asteroid belt, However, dynamic perturbations from the giant planet have removed the majority of the embryos from this area.