History of the Universe

   

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Physical Environment > Weathering of Rock

Earlier  4 Billion Years ago Later

This site tells the story of the history of the universe. Click Earlier and Later to follow the story. Note: Many facts have been simplified to make them easier to understand.

 
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The rain fell on the rocks of the volcanoes and weathered them. Weathering can happen in several ways.
  • Rain can enter cracks in the rock. At night it freezes into ice and expands, breaking open the rock.
  • Rain also contained chemicals called acids which can attack the rock.
  • .

The rock broke down into sand, clay and minerals. These were carried along in streams but the sand and clay soon sank to the bottom. The minerals were carried away in the streams which collected to make the first oceans.

   
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Earlier  4 Billion Years ago Later

Physical Environment > Weathering of Rock

   

  Basic Information  

   

  Further Information  

   

  Other Hotu Pages  

   

  Questions  

   

  Edit  

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