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Earth’s Natural satellite – the moon

Earth’s Natural satellite – the moon. 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. https://www.youtube.com/watch?v=ibV4MdN5wo0.

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Earth’s Natural satellite – the moon

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  1. Earth’s Natural satellite – the moon

  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

  3. https://www.youtube.com/watch?v=ibV4MdN5wo0

  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

  6. http://www.lpi.usra.edu/education/skytellers/moon_phases/images/fig8.jpghttp://www.lpi.usra.edu/education/skytellers/moon_phases/images/fig8.jpg

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

  8. Eclipses – Lunar and SolarWhat’s the difference?

  9. Lunar eclipse – full moon

  10. Solar eclipse – new moon

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

  12. 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)

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

  14. 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

  15. http://www.youtube.com/watch?v=AQRNzepe4wI • http://www.youtube.com/watch?v=nXseTWTZlks

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