Earth History

Earth History

1. Bombardment

   • • Along time ago comets hit earth over and over to shape earth the way it is today.

2. Geological Time Scale

   • Layers of Earth
     • • crust, mantle inner core and the core
   • Relative Dating
     • • Not an exact date of time.
   • • A scale of time for earth

3. Stratigraphy

   • • Discovering rocks that come from deep n the earth

4. Fossil records

   • collection of fossils representing the life before us.

5. Absolute dating

   • • exact date of time

Imágenes y archivos del mapa