because the time span of earth past is so great geologic
becase scientists use it to place history in order
A geologic time scale is a scale that was developed by scientists to show when and for how long different events happened in the Earth's history. Some events included on the scale are when plant life appeared, when mountains were formed and when dinosaurs roamed the Earth. The geologic time scale divides Earth's history into periods such as the Cretaceous, Jurassic and Triassic periods.
how different parts of earths history compare to the whole world
how does relative dating show the history of a region
because the time span of earth past is so great geologic
The units of geologic time are much longer
to die
Geologic Maps show the arrangement and types of rocks at the Earth's surface.
To have a scientist make a geologic map, they need to know something about geologic formation to show what the map is meaning. They use color to show the differences of the kind of rock and its age.
unconformities show a gap in the geologic records
Months, years or even centuries aren't helpful for thinking about earth's long history. Because the time span of earth's past is so great,geologist use the geologic time scale to show earths history. :they didn't discover much, but they use fossils,DNA,and reacher many things.:
as you move away from an ocean ridge the rocks get older