jueves, 9 de enero de 2014

UNIT 6  THE  EARTH
The Earth is a terrestrial planet, this means that it is made up mostly of rocks rather than gas (as Jupiter). It is the largest of the four terrestrial planets in size and mass. Terrestrial planets are inner planets.

The Earth consists of four spheres:
  • geosphere
  • hydrosphere
  • atmosphere
  • biosphere
 http://www.arizonahistoricalsociety.org/Education/Earth-Spheres/

If you want to read more information click on the pictures and visit the different spheres.
http://people.emich.edu/shatline/classpage/

If you want to see the four spheres in a real picture, click on the image below:

http://www.classzone.com/books/earth_science/terc/content/investigations/es0103/es0103page02.cfm?chapter_no=investigation

Learn more about Earth´s spheres, click on this animated gif:

http://www.cotf.edu/ete/modules/msese/earthsysflr/spheres.html


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