1. Photo taken near the landing site of Apollo 17

2. Crescent Moon

3. Quarter Moon

4. Gibbous Moon

5. Full Moon

6. The moon’s diameter is about ¼ or 25% of the earth’s. So, if the earth is about 13,000 km in diameter, the moon is about 3,250 km

7. The moon is about 384,000 km from the earth. So, you could say that the moon is about 30 “earths” away from earth.

8. The BARYCENTER of the earth-moon system is much closer to the earth than the moon. The BARYCENTER is the CENTER OF GRAVITY between the Earth and the Moon.

9. Galileo Galilee 1609

10. Galileo Galilee 1609

11. maria terrae (dark because of volcanic activity)

12. Craters on the Moon are caused by falling comets and asteroids.

13. The diameter of the crater is usually 5 to 10 times the diameter of the impacting body.

15. The RAYS that surround some craters are probably caused by the lighter color of the material ejected during an impact.

17. RILLES are formations that can either be straight or winding.

18. The rilles were probably caused by volcanic activity.

19. Is there any volcanic activity (volcanism) on the moon today? Probably not.

20. lunar basalt

21. anorthosite

22. breccia

23. tektites

25. How does the moon cause tides? HIGH TIDELOW TIDE

26. The Moon has much less atmosphere than Earth because, due to the moon’s weak gravity, gases escape as quickly as they’re caught.

27. Four parts Of the Moon’s Interior: 1)Core 2)Partially Molten Region 3) Lithosphere 4) Crust

28. The FISSION theory of moon origin: The moon was once part of the earth, but it broke away because the earth once rotated very rapidly.

29. The ACCRETION theory of moon origin: The moon formed in orbit around the earth, but not out of material drawn from the earth. The CAPTURE theory of moon origin: The moon formed elsewhere in the solar system and was captured by the earth during a close encounter.

30. The GIANT IMPACT theory of moon origin The theory that is now the most widely accepted

31. The GIANT IMPACT theory of moon origin:

32. The GIANT IMPACT theory of moon origin: The GIANT IMPACT Theory states that, when the young earth was forming, an extremely massive object struck the Earth, shooting debris into space. Some of this debris collected to form the Moon.