The Nebular Hypothesis and Formation of the Solar System A) have the Sun at their exact center. E) meteoroids. Meteoric material dates the formation of the solar system at about ________ billion years. Then the accumulation of matter continues, which will lead to the onset of nuclear reactions that allow the newly formed star to resist gravitational pressure. The asteroids moving in the orbit of Jupiter, but 60 degrees ahead or behind it, are called b. where the comet came from Our solar system was created from a dust and gas . [64] An additional difference is the composition of the planetesimals, which in the case of giant planets form beyond the so-called frost line and consist mainly of icethe ice to rock ratio is about 4 to 1. As the denser regions pulled in more and more matter, conservation of momentum caused it to begin rotating, while increasing pressure caused it to heat up. Hr. D) comet nuclei Each year, or orbit around the sun, the Earth passes through that same debris trail, leading to an annual meteor shower. I highly recommend you use this site! E) short period comets. The main issue was angular momentum distribution between the Sun and planets, which the nebular model could not explain. e. Jupiter, Saturn, Uranus, Neptune, and Pluto, d. Jupiter, Saturn, Uranus, and Neptune only, All the terrestrial planets lie inside the asteroid belt. When it comes to the formation of our Solar System, the most widely accepted view is known as the Nebular Hypothesis. If they form near the end of the oligarchic stage, as is thought to have happened in the Solar System, they will influence the merges of planetary embryos, making them more violent. Many of the Jupiter-sized planets have eccentric orbits which may indicate that gravitational encounters occurred between the planets, although migration while in resonance can also excite eccentricities. E) reverses its direction of rotation. [2] Initially it is a slow process, increasing the core masses up to 30MEarth in a few million years. According to our present theory of solar system formation, how did Earth end up with enough water to make oceans? While a terrestrial planet is a planet made of solid material, such as rock or metals, a Jovian planet is comprised of mostly gases (such as hydrogen, helium, or other similar gases). A) usually annual events, as the orbits again intersect. While originally applied only to the Solar System, the SNDM was subsequently thought by theorists to be at work throughout the Universe, and has been used to explain the formation of many of the exoplanets that have been discovered throughout our galaxy. Because metallic elements only comprised a very small fraction of the solar nebula, the terrestrial planets could not grow very large. An error occurred trying to load this video. This site is using cookies under cookie policy . It helped me pass my exam and the test questions are very similar to the practice quizzes on Study.com. Some of these irregularities have to do with the existence of hot Jupiters that orbit closely to their stars with periods of just a few days. All four jovian planets are thought to have cores larger than Earth, All jovian planets have rings around their equators and at least eight moons, Pluto is more similar to the jovian planet's icy moons than to any of the planets, Due to their great masses, all four jovian worlds are much denser than the Earth, A Kuiper Belt object was discovered that may be larger than Pluto, Barringer Crater in Arizona is an example of a meteorite impact, Most astronomers now believe the demise of the dinosaurs 65 million years ago was caused by a e. Uranus, Which of the following are the jovian planets? That blows a 1st geeration of large bubbles with massive, compressed shells that are seeded with supernova elements, as we see Earth started out with. Describe the function(s) of the placenta. This could have been the result of a passing star, or shock waves from a supernova, but the end result was a gravitational collapse at the center of the cloud..
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