1. INTERPRETING THE EARTHS HISTORY By: Hannah

2. PLATE TECTONICSTogether, the crust and the plates The theory of plate tectonics claims make up lithosphere, the solid that the Earths plates are always in motion. surfaces of the earth.

3. TY PE S OF PL A TE S B OU N DA R IE Shttp://www.youtube.com/watch?v=CsRNUvLYKK0&safety_mode=true&persist_safety_mode=1&safe=active

4. The Geologic TimescaleIt took fossilsand rock layersto develop thegeologictimescale,which assignsnames anddates todifferent timesin the Earthshistory.

5. Methods of relatives datingGeologistsUsed a methodcalled relativedating toconstruct thegeologictimescale.