1. Chapter 6: Terrestrial Planets -The Moon

2. Earth’s interior is revealed by seismology, the study of earthquakes. Layers are revealed: A layered object: Inner core Outer core Mantle Crust Hydrosphere Atmosphere Magnetosphere

4. Earth’s Moon: the interior is not as well understood Missing: Hydrosphere Atmosphere Magnetosphere

5. Full Moon, Near Side

6. Far side of the Moon (taken by Apollo 16)

7. Near Side Far Side Two Faces of the Moon Maria Impact Basin Cratered Highlands

8. A12 A14 A15 A17 A11 A16 L24 L20 L16 Apollo and Luna Landing Sites

9. Moon, Close Up, craters, maria, and highlands

10. Meteoroid Impact causes craters and ejecta

11. Lunar Craters, big and small (microscopic, even)

12. Lunar Surface is blanketed in dust from small meteorites.

13. Lunar Tides are due to the gravity of the Moon

14. Solar and Lunar effects on Tides depend on the relative orientations of the Earth, Moon, and Sun

15. The tidal bulge is actually offset somewhat from being directly underneath the Moon. This produces a torque, a kind of twisting force on the Earth. The tides cause the Earth to slow down and the Moon’s orbit to increase in radius (4 cm per century). Also, the Moon’s rotation is synchronous with its orbit.

16. The Moon’s formation is believed to be due to a collision of a massive (Mars-sized) object with the early Earth. Computer simulation show that this could leave a moon- sized satellite in the correct orbit.

17. Lunar Evolution: the Moon after the early bombardment

18. Lunar Evolution: the formation of the maria by volcanic eruptions

19. Lunar Evolution: after 3 billion years of cratering

20. Large Lunar Crater (note smaller recent craters)