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Astronomy

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Oct 30, 2023

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Ch. 6 Study Questions 1. What caused the giant cloud of gas and dust, that formed the solar system, to heat up? Giant clouds of dust and gas are caused by atoms within the protosun that collide. With increasing speed and frequency, this collision proceeds to compress and gain mass. This causes internal preheating and makes the cloud's core hot. 2. Where did most of the water on Earth probably come from? Most of the water on Earth probably came from water-rich comets, water-bearing asteroids, and ice in the planetesimals. 3. Why is most of the hydrogen and helium in the outer solar system? Most of the hydrogen and helium are in the outer solar system because the colder temperatures allow them to remain in orbit. 4. What is the Kuiper Belt? The Kuiper Belt is a donut-shaped ring of frozen planetesimals that orbits the sun just past Neptune. It stretches 30-55 AU. 5. How did all the objects in the Kuiper Belt and the Oort Cloud probably get out there? The Kuiper belt and Oort cloud were created by debris sent inward and far outward during a change caused by Saturn, Neptune, and Uranus spiraling outward, with Neptune and Uranus changing places. 6. Where is the asteroid belt? The asteroid belt is between Mars and Jupiter. 7. Why didn't the asteroid belt clump up into a single big object. The asteroid belt didn't clump into a single big object because of Jupiter's inner migration. 8. Where did the craters in the Moon come from? The craters in the Moon came from space debris. 9. What are comets mostly made of? Comets are mostly made of equal amounts of ice and rock. 10. What is the largest planet in the solar system? The largest planet in the solar system is Jupiter.
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