What does solar nebula theory imply?
Currently the best theory is the Nebular Theory . This states that the solar system developed out of an interstellar cloud of dust and gas, called a nebula . Most likely the next step was that the nebula flattened into a disk called the Protoplanetary Disk ; planets eventually formed from and in this disk.
How the planets of the solar system form according to the nebular theory?
According to this theory, the Sun and all the planets of our Solar System began as a giant cloud of molecular gas and dust. Then, about 4.57 billion years ago, something happened that caused the cloud to collapse.
What is the main reason that the solar nebula formed two types of planets?
After the solar nebula collapsed to form our Sun, a disk of material formed around the new star. The temperature across this protoplanetary disk was not uniform. Since different materials condense at different temperatures, our solar system formed different types of planets.
What evidence exists for the solar nebula theory?
What Evidence do we have of a Nebular Theory-type development? We have observed discs of gas and dust around other stars. We can also see evidence of stars and planets forming in clouds of gas and dust; young planet systems in the making are called Proplyds.
What role does the solar nebula chemical composition have in the formation of planets?
In the outer solar nebula, planetesimals formed from ice flakes in addition to rocky and metal flakes. Since ices were more abundant the planetesimals could grow to much larger sizes, becoming the cores of the four jovian (Jupiter, Saturn, Uranus, and Neptune) planets.
What is the difference between nebular hypothesis and solar nebula theory?
The nebular hypothesis is the most widely accepted model in the field of cosmogony to explain the formation and evolution of the Solar System (as well as other planetary systems). The widely accepted modern variant of the nebular theory is the solar nebular disk model (SNDM) or solar nebular model.
Why did the solar nebula collapse to form the Sun and the planets quizlet?
The solar nebula is the cloud of gas from which our solar system was born when it collapsed under its own gravity. This came from the billion of years of galactic recycling that occurred before the Sun and planets were born.
What is meant by the solar nebula quizlet?
solar nebula. a rotating cloud of gas and dust from which the sun and planets formed. nuclear fusion. the process by which nuclei of small atoms combine to form a new, more massive nucleus; the process releases energy.
How does the solar nebula theory help you to understand the location of asteroids?
How does the solar nebula theory help you understand the location of asteroids? Many of the asteroids are material that would have formed a Terrestrial planet, but could not, due to gravitational pull from Jupiter and asteroids in places other than the belt are debris left over from the formation of the solar system.
Is the solar nebula theory believable?
The nebular hypothesis is the most widely accepted model in the field of cosmogony to explain the formation and evolution of the Solar System (as well as other planetary systems). Some elements of the original nebular theory are echoed in modern theories of planetary formation, but most elements have been superseded.
What is the best explanation for how the solar nebula was cleared of debris quizlet?
The solar nebula was cleared of gas through the pressure of the sunlight (called radiation pressure) and through the massive solar wind. The nebula was cleared of some of the leftover debris by the Heavy Bombardment period.
What are some flaws with the solar nebula theory?
The flaws of nebula theory begin with interpretation, as mainstream scientists believe that the solar system formed randomly very slowly and gradually over billions of years as rotating clouds of dust and gas condensed to form the solar system, the planets, and the planetary moons.
How was the Solar System formed according to the nebular theory?
According to the nebular theory, a solar system begins when an interstellar cloud, containing approximately 75 percent hydrogen, 25 percent helium and traces of other elements, begins to form areas of higher concentration, or clumps.
What is the evidence supporting the nebula theory of Solar System formation?
The standard model for formation of the Solar System is that it formed from a giant interstellar cloud. What is the evidence to support this theory? Perhaps the most convincing line of evidence supporting this theory are observations of the same process currently happening elsewhere in our Galaxy.
What is the nebular theory of the Solar System?
The nebular theory of solar system formation suggests that stars and their planets form out of cooling interstellar clouds of molecular hydrogen. As the cloud contracts, it forms a disc of dense material that forms the star.
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