D) Kuiper Belt Objects D) are almost circular, with low eccentricities. When it comes to the formation of our Solar System, the most widely accepted view is known as the Nebular Hypothesis. In pebble accretion objects between a cm and a meter in diameter falling toward a massive body are slowed enough by gas drag for them to spiral toward it and be accreted. IV. D) where the ecliptic is. A) close to or at aphelion. In addition, Scottish scientist James Clerk Maxwell (1831 1879) asserted that different rotational velocities between the inner and outer parts of a ring could not allow for condensation of material. 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) the satellite system of Jupiter. The migration of the super-Earths, or the embryos that collided to form them, is likely to have been Type I due to their smaller mass. a spherical cloud of cometary nuclei far beyond the kuiper belt, Which of the following does not fall into the category of interplanetary debris? bodies found beyond Neptune. c) should be randomly oriented to their star's equator. e. where the ecliptic is. All the planets revolve around the Sun in the same direction, except for Venus and Uranus. Various simulations have also demonstrated that the accretion of material in these discs leads to the formation of a few Earth-sized bodies. In essence, this theory states that the Sun, the planets, and all other. ocean floor topography can be estimated from space using ________. Let us know if you have suggestions to improve this article (requires login). solar nebula, gaseous cloud from which, in the so-called nebular hypothesis of the origin of the solar system, the Sun and planets formed by condensation. the core of a differntiated asteroid, now broken up. Solar Nebular Hypothesis: Definition & Explanation - Study.com ", "Formation of gas giant planets: core accretion models with fragmentation and planetary envelope", "Clustered Star Formation and the Origin of Stellar Masses", "The onset of collapse in turbulently supported molecular clouds", "The formation of protostellar disks. a. cout << "x == y: " << (x == y) << endl; A) Saturn. D) Mars. B) beyond the orbit of Neptune The terrestrial planets grow by slower accretion, and the material may have started to be cleared from the disk. How far is a spring extended if it has 1.0J1.0 \mathrm{~J}1.0J of potential energy and its spring constant is 1,000N/m1,000 \mathrm{~N} / \mathrm{m}1,000N/m? astronomy exam study assignment 6 Flashcards | Quizlet According to the Solar Nebula theory, planets a) should be a common result of star formation. ________ of young, condensing stars. B) Comet Halley. C) asteroids E) should be randomly oriented to their star's equator. 3. C) Ida. Both types of planet begun with planetesimals growing through the process of accretion, but only the jovian planets were able to capture hydrogen and helium gas from the solar nebula. A) spins faster due to conservation of angular momentum. [19] It starts with planetesimals that undergo runaway growth, followed by the slower oligarchic stage. A) comets Leftover debris that never became planets congregated in regions such as the Asteroid Belt, Kuiper Belt, and Oort Cloud. A) the Kuiper belt. Astronomy Unit 5 Flashcards | Quizlet lessons in math, English, science, history, and more. [2] Initially it is a slow process, increasing the core masses up to 30MEarth in a few million years. The planets are of two different types. solar nebular disk model (SNDM) Archives - Universe Today I. In 1755 the German philosopher Immanuel Kant suggested that a nebula in slow rotation, gradually pulled together by its own gravitational force and flattened into a spinning disk, gave birth to the Sun and planets. ecliptic plane in which the planets then formed. E) None of the above are true, A meteor is For example, the SNDM model has been successful in explaining the appearance of accretion discs around young stellar objects. The ices that formed these planets were more plentiful. Updates? Suppose that x, y, z, and w are int variables, and x = 3, y = 4, z = 7, and w = 1.What is the output of the following statements? d. the velocity of the comet Also, the study of extrasolar planets have allowed scientists to notice irregularities that cast doubt on the nebular hypothesis. The first spacecraft to land on the surface of an asteroid was named b. false, The Manicouagan reservoir near Quebec is an example of: The influence of gravitationally induced angular momentum transport on disk structure and appearance", "Accretion and the evolution of T Tauri disks", "X-rays and Fluctuating X-Winds from Protostars", "Emission-line diagnostics of T Tauri magnetospheric accretion. Our editors will review what youve submitted and determine whether to revise the article. a few kilo in size and very low in density. Jupiter can be considered a clue, too massive to tilt by outside forces. A nebula is a big cloud of gas and dust in space. A) Planetary density increases with increasing distance from the Sun. D) size divided by weight. Which of the following have an icy composition? The Solar Nebula Theory: Formation of the Solar System Swedish philosopher Emanuel Swedenborg in 1734 proposed that the planets formed out of a nebular crust that had surrounded the Sun and then broken apart. Long-period comets are believed to originally come from According to this theory, the Sun and all the planets of our Solar System began as a giant cloud of molecular gas and dust.

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