Документ взят из кэша поисковой машины. Адрес
оригинального документа
: http://zebu.uoregon.edu/ph199/plates.html
Дата изменения: Thu Oct 27 21:12:24 1994 Дата индексирования: Mon Oct 1 22:05:01 2012 Кодировка: Поисковые слова: п п п п п п п п |
Map of recent earthquakes USA
Map of recent earthquakes World
The composition of the earth reflects the processing of elements by stars. The earth was originally molten and hence seperation of light and heavy elements occurred in the earth's gravitational field. Heavy stuff sinks to the core; light stuff floats and cools to form the crust
Plate Tectonics means that the crust of the earth is divided into large connected units, all of which are moving relative to one another:
___________________________________________________________________ The Electronic Universe Project e-mail: nuts@moo.uoregon.edu