2. Origin  Several theories  Gravity, same formation material, Earth’s residual material  Most popular – impact/collision theory ** billions of years ago a major impact between Earth and a object the size of Mars

4. Structure of the Moon  Similar layers to Earth  Crust, mantle (molten), and core (solid iron)  Moonquakes  Slight magnetic field

5. Why does the moon change phases?  the light we see is the reflection of the sun on the moon’s surface  the phases are determined by the positions of the earth, moon and sun AND  the amount of the sunlit side that is facing you on earth

7.  http://www.lpi.usra.edu/education/skytel lers/moon_phases/images/fig8.jpg

9. When and how would someone observe the image below?

11. Eclipses – Lunar and Solar What’s the difference?

12. Lunar eclipse – full moon

14. Solar eclipse – new moon

17.  partial – penumbra  total - umbra  Challenge!  What part of the sun is seen during a partial solar eclipse?

19. Tides  gravitational attraction occurs for all matter (in any state)  although the sun has the most influence on earth (considering its superior mass), the moon also affects the gravitational pull  the water on earth is pulled towards the moon and bulges at the closest and opposite points on the planet  creating two high and two low tides in one rotational period (about 24 hours)

20. Why is neap tide not as drastic as spring tide?  Neap – first and last  Quarter  Spring – new and  full moon

22. The Dark Side of the Moon – more like, the Other Side of the Moon  the moon’s rotation and revolution are the same – about 27.3 earth days  we always see the same side of the moon no matter what the phase or the season

23.  http://www.youtube.com/watch?v=AQR Nzepe4wI http://www.youtube.com/watch?v=AQR Nzepe4wI  http://www.youtube.com/watch?v=nXse TWTZlks http://www.youtube.com/watch?v=nXse TWTZlks