Earth’s Moon Earth Science 1st Semester
<ul><li>Most of the knowledge about the Moon comes from the  Apollo Missions  conducted by the Unites States between the y...
<ul><li>Some information that has been determined at this point is that the Moon has a density of  3.3 g/mL , while the Ea...
 
The Lunar Surface <ul><li>The moon has  no liquid water  on its surface nor any form of an  atmosphere . </li></ul><ul><li...
 
<ul><li>The Moon is not  tectonically  active right now, so  volcanic eruptions  do not occur any longer </li></ul>
<ul><li>Since the Moon has no atmosphere, particles from space continually bombard its surface, gradually  smoothing out t...
Craters <ul><li>The term used to describe  round depressions in the surface of the moon .  </li></ul><ul><li>There are man...
 
<ul><li>Craters are caused by the impact of  rapidly moving meteoroids . </li></ul><ul><li>Meteoroids are  small solid par...
<ul><li>In contrast to the Moon, the Earth has  very few  recognizable craters on its surface. </li></ul>
<ul><li>When meteoroids come through Earth’s  atmosphere , the friction that is caused tends to  burn  most of them up. </...
<ul><li>The ones that do make it leave little evidence for us to examine today, as the forces of  erosion, and plate movem...
Formation of a Crater <ul><li>When a  meteoroid  strikes the surface of the moon, it will  compress  the material that it ...
<ul><li>There will be some  rebound , where material is thrown back up from the new crater. </li></ul>
<ul><li>Most of this ejected material will land near the crater and build a  rim around it .  </li></ul><ul><li>The  heat ...
<ul><li>The  larger  craters on the Moon, like Kepler and Copernicus, are believed to be  relatively young  because of the...
 
Highlands <ul><li>This moon landscape feature makes up  most of the lunar surface . </li></ul><ul><li>These  densely pitte...
 
Mare <ul><li>The term given to any  dark, relatively smooth  area on the moon’s surface.  If there is more than one, they ...
<ul><li>They were thought to have originated when  asteroids  were able to puncture the lunar surface, releasing  magma  f...
<ul><li>Asteroids  are relatively small, rocky bodies with a size from a few hundred kilometers to less than a kilometer. ...
<ul><li>Scientists have determined that the maria are comprised of a type of  hardened lava  known as  basalt . </li></ul>
<ul><li>Scientists theorize that the material that fills the maria could be  thousands of kilometers thick. </li></ul>
<ul><li>A surface feature known as a  rille  is associated with maria. </li></ul><ul><li>Rilles look very much like  valle...
Regolith <ul><li>Any lunar terrain will be covered with a  layer of grey debris  from the millennia of bombardment from me...
<ul><li>It is composed of  volcanic rocks, bead like glass, and really fine lunar dust . </li></ul>
<ul><li>In portions of the Moon explored by astronauts, the lunar regolith was over  three meters thick. </li></ul>
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Earths Moon

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Earths Moon

  1. 1. Earth’s Moon Earth Science 1st Semester
  2. 2. <ul><li>Most of the knowledge about the Moon comes from the Apollo Missions conducted by the Unites States between the years 1969 and 1972 . </li></ul>
  3. 3. <ul><li>Some information that has been determined at this point is that the Moon has a density of 3.3 g/mL , while the Earth has a density of 5.5g/mL </li></ul><ul><li>The difference is due to the Moon having a small iron core. </li></ul><ul><li>As a result of its small mass the Moon has 1/16 th the gravity of the Earth. </li></ul>
  4. 5. The Lunar Surface <ul><li>The moon has no liquid water on its surface nor any form of an atmosphere . </li></ul><ul><li>As a result, the Moon’s surface cannot be worn down by the action of moving wind and water, a process called weathering and erosion on Earth. </li></ul>
  5. 7. <ul><li>The Moon is not tectonically active right now, so volcanic eruptions do not occur any longer </li></ul>
  6. 8. <ul><li>Since the Moon has no atmosphere, particles from space continually bombard its surface, gradually smoothing out the landscape . </li></ul>
  7. 9. Craters <ul><li>The term used to describe round depressions in the surface of the moon . </li></ul><ul><li>There are many, the largest being the width of the state of Indiana. </li></ul>
  8. 11. <ul><li>Craters are caused by the impact of rapidly moving meteoroids . </li></ul><ul><li>Meteoroids are small solid particles of rock or metal that travel through space. </li></ul>
  9. 12. <ul><li>In contrast to the Moon, the Earth has very few recognizable craters on its surface. </li></ul>
  10. 13. <ul><li>When meteoroids come through Earth’s atmosphere , the friction that is caused tends to burn most of them up. </li></ul>
  11. 14. <ul><li>The ones that do make it leave little evidence for us to examine today, as the forces of erosion, and plate movement have erased most of the craters. </li></ul>
  12. 15. Formation of a Crater <ul><li>When a meteoroid strikes the surface of the moon, it will compress the material that it strikes. </li></ul>
  13. 16. <ul><li>There will be some rebound , where material is thrown back up from the new crater. </li></ul>
  14. 17. <ul><li>Most of this ejected material will land near the crater and build a rim around it . </li></ul><ul><li>The heat generated by the impact is enough to melt rock into molten glass . </li></ul>
  15. 18. <ul><li>The larger craters on the Moon, like Kepler and Copernicus, are believed to be relatively young because of the bright rays or splash marks that radiate out form the crater. </li></ul>
  16. 20. Highlands <ul><li>This moon landscape feature makes up most of the lunar surface . </li></ul><ul><li>These densely pitted, light colored areas contain mountain ranges whose peaks reach as high as the Himalayas on Earth. </li></ul>
  17. 22. Mare <ul><li>The term given to any dark, relatively smooth area on the moon’s surface. If there is more than one, they are called maria . </li></ul>
  18. 23. <ul><li>They were thought to have originated when asteroids were able to puncture the lunar surface, releasing magma from the interior. </li></ul>
  19. 24. <ul><li>Asteroids are relatively small, rocky bodies with a size from a few hundred kilometers to less than a kilometer. </li></ul>
  20. 25. <ul><li>Scientists have determined that the maria are comprised of a type of hardened lava known as basalt . </li></ul>
  21. 26. <ul><li>Scientists theorize that the material that fills the maria could be thousands of kilometers thick. </li></ul>
  22. 27. <ul><li>A surface feature known as a rille is associated with maria. </li></ul><ul><li>Rilles look very much like valleys or trenches . </li></ul><ul><li>Scientists think they may be the remnants of ancient lava flows. </li></ul>
  23. 28. Regolith <ul><li>Any lunar terrain will be covered with a layer of grey debris from the millennia of bombardment from meteorites. </li></ul><ul><li>This soil like layer is called a lunar regolith . </li></ul>
  24. 29. <ul><li>It is composed of volcanic rocks, bead like glass, and really fine lunar dust . </li></ul>
  25. 30. <ul><li>In portions of the Moon explored by astronauts, the lunar regolith was over three meters thick. </li></ul>

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