1. Ch.20 The Solar System Section 4: The Inner Planets

2. Section 4 Gas Giants & Pluto – The four outer planets – Jupiter, Saturn, Uranus, & Neptune – are much larger and more massive than Earth, and they do not have solid surfaces – Gas giants – Ring

3. Section 4 Jupiter – The largest and most massive planet – Jupiter’s Atmosphere – Jupiter’s Structure – Jupiter’s Moons

4. Section 4 Saturn – Saturn’s Rings Has the most spectacular rings of any planet – Saturn’s Moons

5. Section 4 Uranus – Discovery of Uranus – Exploring Uranus Uranus’s axis of rotation is tilted at an angle of about 90 degrees from the vertical – Uranus’s Moons

6. Section 4 Neptune – Is a cold, blue planet. Its atmosphere contains visible clouds – Discovery of Neptune – Exploring Neptune – Neptune’s Moons

7. Section 4 Pluto – Has a solid surface and is much smaller and denser than the outer planets – Pluto’s Orbit – Dwarf Planets