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Terrestrial Planets

Terrestrial Planets. Mercury. Similar Bodies. Moon. Mercury. Discovery Scarf. Scarf Formation. Movie. Caloris Basin. Mercury’s Interior. Mercury’s Formation. Mercury Formation. Venus. Sif Mons Active volcano. Coronae Collapsed volcanic domes. Pancake Volcanoes

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Terrestrial Planets

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  1. Terrestrial Planets

  2. Mercury

  3. Similar Bodies Moon Mercury

  4. Discovery Scarf

  5. Scarf Formation Movie

  6. Caloris Basin

  7. Mercury’s Interior

  8. Mercury’s Formation Mercury Formation

  9. Venus

  10. Sif Mons Active volcano Coronae Collapsed volcanic domes Pancake Volcanoes Eruptions of very thick lava

  11. The Surface of Venus Venus 2 Venus 1

  12. Interior of Venus

  13. Seismic Waves in the Earth S Waves (transverse) Epicenter P Waves Inner Core Outer Core P Waves (longitudinal) Mantle S Waves

  14. Interior of the Earth Outer Core Inner Core Mantle Crust

  15. Interior Composition and Temperature

  16. Mantle Convection

  17. Plate Tectonics

  18. Mid-Atlantic Ridge

  19. San Andreas Fault

  20. Island Chains

  21. Movie

  22. Craters

  23. Erosion

  24. Double Planet

  25. The Moon

  26. On the Surface

  27. Basalts Lunar Maria

  28. Breccias Lunar Highlands

  29. Structure

  30. Lunar Origin • Fission Earth-Moon formed as one, rapidly rotating body. Moon spun off of Earth • Pro • Average density matches • Volume of Moon = Volume of Pacific Ocean basin • Con • Can’t account for differences in composition

  31. Lunar Origin • Capture Moon formed elsewhere and was captured on close approach • Pro • can account for composition differences • Con • very difficult to capture in a nearly circular orbit

  32. Lunar Origin • Binary Accretion Earth and Moon formed together but as separate bodies • Pro • might be able to explain differences in composition • Con • most models are stretched to accommodate this idea

  33. Lunar Origin • Collisional Accretion (Giant Impact) Mars-sized body collided with the Earth. The collision spun off part of the mass which became the Moon.

  34. Mars

  35. Percival Lowell’s Mars

  36. Cratered Terrain

  37. Sinuous Channels

  38. Valles Marineris

  39. The Tharsis Volcanoes

  40. Viking

  41. Mars Pathfinder

  42. Spirit Rover

  43. Martian Sunset

  44. Mars Interior

  45. Life on Mars? • In 1996, a team of U.S. scientists said they had discovered evidence of ancient, single-cell life on Mars in remains from a meteorite that plunged to Earth 13,000 years ago.

  46. 1997 1976 Face on Mars?

  47. Moons of Mars Phobos Deimos

  48. End of Section

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