1. Compare the ring systems of Saturn and Uranus. Why were Uranus’s rings unnoticed until the 1970s? 2. How do the orientations of Uranus’s and Neptune’s magnetic axes differ from those of the other...

1. Compare the ring systems of Saturn and Uranus. Why were Uranus’s rings unnoticed until the 1970s?

2. How do the orientations of Uranus’s and Neptune’s magnetic axes differ from those of the other planets?

3. To test your knowledge of planetary magnetic fields, do Interactive Exercise 8-5 on the Web. You can print out your results, if required.