The Terrestrial Planets
Mercury: Innermost Planet <ul><li>Second smallest </li></ul><ul><li>Absorbs most of the sunlight and reflects only 6 perce...
Mercury’s Surface Features <ul><li>Cratered highlands </li></ul><ul><li>Very dense (contains a large iron core for its siz...
Mercury’s Surface Temperature <ul><li>Revolves around the sun quickly but rotates slowly </li></ul><ul><ul><li>One rotatio...
Venus: The Veiled Planet <ul><li>Named for the goddess of love and beauty </li></ul><ul><li>Orbits the Sun once every 255 ...
Venus’ Surface Features <ul><li>Covered in thick clouds that visible light can not penetrate </li></ul><ul><li>Shaped from...
Venus’ Surface Temperature <ul><li>Greenhouse effect heated the atmosphere to 475°C </li></ul><ul><ul><li>Atmosphere is 97...
Mars: The Red Planet <ul><li>The Martian atmosphere </li></ul><ul><ul><li>1 percent the density of Earth </li></ul></ul><u...
Mars’ Surface Features <ul><li>Large volcanoes </li></ul><ul><ul><li>The Olympus Mons is the size of Ohio and 23 kilometer...
Water on Mars <ul><li>Some areas show drainage patterns </li></ul><ul><li>Some indications show groundwater has recently m...
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Chapter 23.2ppt

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Chapter 23.2ppt

  1. 1. The Terrestrial Planets
  2. 2. Mercury: Innermost Planet <ul><li>Second smallest </li></ul><ul><li>Absorbs most of the sunlight and reflects only 6 percent back into space </li></ul>
  3. 3. Mercury’s Surface Features <ul><li>Cratered highlands </li></ul><ul><li>Very dense (contains a large iron core for its size) </li></ul><ul><li>Has very long scarps (deep slopes) that cut across plains and craters </li></ul><ul><ul><li>Scarps: result from crustal changes as the planet cooled and shrank </li></ul></ul>
  4. 4. Mercury’s Surface Temperature <ul><li>Revolves around the sun quickly but rotates slowly </li></ul><ul><ul><li>One rotation is 59 Earth-days </li></ul></ul><ul><ul><ul><li>One night last about a month </li></ul></ul></ul><ul><ul><ul><ul><li>Temperatures drop to -173°C </li></ul></ul></ul></ul><ul><ul><ul><li>One day last about a month </li></ul></ul></ul><ul><ul><ul><ul><li>Temperatures rise to 427°C </li></ul></ul></ul></ul><ul><li>Mercury has the greatest temperature extremes of any planet </li></ul>
  5. 5. Venus: The Veiled Planet <ul><li>Named for the goddess of love and beauty </li></ul><ul><li>Orbits the Sun once every 255 Earth-days </li></ul><ul><li>Similar to Earth in size, density, mass, and location in the solar system </li></ul><ul><li>Considered “Earth’s twin” </li></ul>
  6. 6. Venus’ Surface Features <ul><li>Covered in thick clouds that visible light can not penetrate </li></ul><ul><li>Shaped from basaltic volcanism and tectonic activity </li></ul><ul><li>80 percent of Venus has plains of old volcanic flow </li></ul><ul><li>8 percent of Venus has highlands </li></ul>
  7. 7. Venus’ Surface Temperature <ul><li>Greenhouse effect heated the atmosphere to 475°C </li></ul><ul><ul><li>Atmosphere is 97 percent carbon dioxide, a green house gas </li></ul></ul>
  8. 8. Mars: The Red Planet <ul><li>The Martian atmosphere </li></ul><ul><ul><li>1 percent the density of Earth </li></ul></ul><ul><ul><li>Made up of mostly carbon dioxide and small amounts of water vapor </li></ul></ul><ul><ul><li>Dust storms cause color changes observed from Earth </li></ul></ul><ul><ul><ul><li>Hurricane forced winds up to 270 kilometers per hour </li></ul></ul></ul><ul><ul><li>Very cold </li></ul></ul>
  9. 9. Mars’ Surface Features <ul><li>Large volcanoes </li></ul><ul><ul><li>The Olympus Mons is the size of Ohio and 23 kilometers high (2 and ½ times larger than Mt. Everest) </li></ul></ul><ul><li>Has canyons much larger than the Grand Canyon </li></ul>
  10. 10. Water on Mars <ul><li>Some areas show drainage patterns </li></ul><ul><li>Some indications show groundwater has recently migrated to the surface </li></ul><ul><ul><li>Some of the escaping water have frozen due to the temperatures that range from -70°C and -100°C </li></ul></ul>
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