8th Grade Ch. 3 Sec. 3 Inner Planets

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8th Grade Ch. 3 Sec. 3 Inner Planets

  1. 1. Ch. 3 Sec. 3 Inner Planets
  2. 2. inner planets Mercury Venus Earth Mars terrestrial planets <ul><li>close </li></ul><ul><li>together </li></ul><ul><li>no or </li></ul><ul><li>few moons </li></ul>small, rocky surfaces
  3. 3. Mercury, messenger of the Roman gods closest planet to Sun no moons Mariner 10 space probe photographed it <ul><li>similar to our moon- </li></ul><ul><li>size </li></ul><ul><li>flat plains </li></ul><ul><li>craters </li></ul>almost no atmosphere temp. ranges from 450 0 C  -170 0 C (day) (night)
  4. 4. <ul><li>Closest planet to Sun </li></ul><ul><li>Smallest terrestrial </li></ul><ul><li>planet </li></ul><ul><li>No moons </li></ul><ul><li>Explored by Mariner 10 </li></ul><ul><li>Similar to Earth’s moon- </li></ul><ul><li>size & craters </li></ul><ul><li>Almost no atmosphere </li></ul><ul><li>Planet of extremes- temp. -170 o - 450 o C </li></ul>Front of card Picture & name of planet Back of card 7 stats (# of moons, names of moons, atmosphere, etc.)
  5. 5. Venus, goddess of love & beauty, springtime & flowers “ morning star” & “evening star” Earth’s twin- similar in size retrograde rotation = rotates backwards (east  west) <ul><li>thick atmosphere- </li></ul><ul><li>sulfuric acid clouds </li></ul><ul><li>greenhouse effect- atmosphere traps heat </li></ul>no moons
  6. 6. Whenever you see a bright object in the west after sunset, it is probably Venus.
  7. 7. The morning sky looking east
  8. 8. Venus Jupiter
  9. 9. Gaea, Earth goddess (ancient Greeks thought of her as Terra Mater ) Earth Mother Earth & moon 70% covered with water only planet with oceans <ul><li>3 main layers- </li></ul><ul><li>crust </li></ul><ul><li>mantle </li></ul><ul><li>core </li></ul>
  10. 10. Mars, Roman god of war “ red planet” atmosphere mostly CO 2 polar ice caps covered by layer of frozen CO 2 tilted axis causes seasons <ul><li>2 moons- </li></ul><ul><li>Phobos </li></ul><ul><li>Deimos </li></ul>
  11. 11. Mars is so cold that carbon dioxide (dry ice) freezes on the winter pole and Venus is so hot that tin and lead would melt on its surface.
  12. 12. Mars and Earth size comparison
  13. 13. <ul><li>polar ice cap </li></ul>Mars
  14. 15. Is there life on Mars ?
  15. 16. Mars’s moons <ul><li>very small </li></ul><ul><li>Phobos - larger moon </li></ul><ul><ul><li>27 km in diameter </li></ul></ul><ul><li>Deimos - smaller </li></ul><ul><ul><li>15 km in diameter </li></ul></ul><ul><li>both covered with craters </li></ul>
  16. 17. Spacecraft to Mars <ul><li>Mars </li></ul>
  17. 19. Pathfinder preparations
  18. 20. Journey of the Pathfinder
  19. 21. Pathfinder airbags
  20. 22. 360 Degree Panorama Mars Pathfinder Landing Site
  21. 23. Rover Sojourner The rover &quot;Sojourner&quot; is a six-wheeled vehicle which is controlled by an Earth-based operator, who uses images obtained by both the rover and lander systems. Note that the time delay is about 10 minutes, requiring some autonomous control by the rover.
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