THE EARTH HISTORY AND OUR KNOWLEDGE

HELLO EVERYONE!

After we had a look to the contents about the origin of the universe. It´s necessary we could difference the main theories and ideas about the origin of that.

Earth is not static. Becuase of that, there are two main theories about the changes along the history of the Earth.
CATASTROPHISM:

 It is based down the supposition that there had been sudden castastrophes that in a short space of time changed the Earth completely.
UNIFORMITARIANISM:

This theory is based on slow and imperceptible changes are produced over millions of years.


Now it´s your turn. Write down a resume about the other two theories. and look for a pic

________-actualismo and catastrofismo. _________________


"The present is the key of the past" This sentence...What theory would you realation with

Look for the meaning of ripple marks. as well as an image. What theory would you relation with this concept.