Define the ice line. How does it affect the contents of the disk?.
Paper details
Instructions: Answer all of the questions below. You may submit your answers in one of two ways. The first option is to insert your answers directly into the Word file and submit your responses via Blackboard. Your section option is to write your answers on a separate sheet of paper and attach it to this sheet. In either case, answers are due by the end of class on the date specified on the syllabus. 1. When the solar system was forming, part of the protoplanetary disk was inside the ice line, and part of the disk was outside the ice line.
Define the ice line. How does it affect the contents of the disk? (1 point) In our solar system, which category of planets is found outside the ice line? How do the properties of these planets reflect their formation? (2 points) 2. An accident has dispersed a devastating amount of Unobtainium into Earth’s atmosphere. Scientists determine that the amount released is 4 times the maximum safe level of the element. a. How many half-lives will pass before the amount of Unobtainium returns to a safe level? (2 points)- b. If the half-life of Unobtainium is 93 years, how many years will pass before the Earth is safe again? (1 point) 3. Name one of the changes made to the nebular hypothesis to account for the properties of exoplanets. What property necessitated this change? (2 points) 4. Answer the following questions about planetary magnetic fields: a. What are two features that scientists think are necessary for a planet to develop a global magnetic field? (2 points) b. Mars rotates at nearly the same rate as the Earth, but it has no magnetic field. What do these facts tell us about the Martian interior? (2 points) 5. You have discovered a new planet. Its average density is slightly less than that of water. What kind of planet is it? Explain your reasoning. (1 point) 6. Explain in general terms how the greenhouse effect works and what effects it has on a planet. (2 points)
Define the ice line. How does it affect the contents of the disk?