D) comet nuclei E) Trojan asteroids, Which of the following have an icy composition? The mergers begin when the dynamical friction due to the gas disk becomes insufficient to prevent collisions, a process that will begin earlier in a higher metallicity disk. Most of the planets found orbiting other stars are similar to Jupiter, but ________ in temperature. B) are highly inclined to the ecliptic. D) between the orbits of Mars and Jupiter This site is using cookies under cookie policy . The smallest planet, Mercury, has no moons. Then, about 4.57 billion years ago, something happened that caused the cloud to collapse. See Answer. e. PF5\mathrm{PF}_5PF5 d) will revolve opposite the star's rotation. Stages that occurred during the formation of our solar system in order: surfaces dramatically altered during the heavy bombardment. C) The asteroids all have about the same density. The idea that the Solar System originated from a nebula was first proposed in 1734 by Swedish scientist and theologian Emanual Swedenborg. Did our Solar System Start with a Little Bang? b. mass times weight The planets formed by accretion from this disc, in which dust and gas gravitated together and coalesced to form ever larger bodies. a. only Jupiter and Saturn A) Trojan asteroids The nucleus of a comet is typically: e. both A and C are correct, Relative to the comet, the direction of the ion tail tells us: [2] One hypothesis is that they initially accreted in the Jupiter-Saturn region, then were scattered and migrated to their present location. The ________ Belt bodies orbit beyond Neptune, but like the planets stay close to the ecliptic plane and in fairly circular orbits. While the ball at the center formed the Sun, the rest of the material would form into the protoplanetary disc. 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. [61] Some of the embryos, which originated in the asteroid belt, are thought to have brought water to Earth. b. Here is a brief outline of the current theory of the events in the early history of the solar system: A cloud of interstellar gas and/or dust (the "solar nebula") is disturbed and collapses under its own gravity. | Nebula Types & Differences, Oceanic Ridge System: Formation & Distribution. sixty degrees ahead or behind jupiter, sharing its orbit about the sun, The most distant objects in our solar system are B) Most stay between the orbits of Mars and Jupiter. away from the sun and becomes longest and brightest at perihelion. [79], Use of the term "accretion disk" for the protoplanetary disk leads to confusion over the planetary accretion process. In the area closer to the sun, where temperatures were higher, condensation of matter occurred which led to the formation of telluric planets, terrestrial or interior. 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. E) a chunk of space debris that has struck the ground. Updates? How Was the Solar System Formed? - The Nebular Hypothesis D) younger. B) Ceres. B) only Jupiter The study of star forming molecular clouds shows that same early, large stars form that way. Due to their great masses, all four jovian worlds are much denser than the Earth.
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