CH 7 HW due 4/18 : Review Questions 1. Why is Jupiter so much richer in hydrogen and helium than Earth? 10. Why do astronomers suspect that Saturn’s moon Enceladus is geologically active? 11. What are the seasons on Uranus like ? 15. What evidence indicates that catastrophic impacts have occurred in the solar system’s past? Discussion Question 2: Why don’t the Terrestrial planets have rings? If you were to search for a ring among the Terrestrial planets, where would you look first? Go to the Griffith Observatory Link at the top of this page. Then go to “The Sky” tab, click on the “Weekly Sky Report” Check it out and name 3 items you can see in the sky. Try to find them, draw a sketch of what you find.