Question

Think about how the geologic time scale was created and how it is divided. Then answer the following questions.

Answer 1

The geologist time scale was formed when scientists studied rock layers and index fossils worldwide. With this information, they placed Earth's rocks in order by relative age. Later, radioactive dating helped determine the exact age of the divisons in the geologic time scale.

This scale is organized by the 4.6 billion years of earth's history into sections based on important changes seen in the geologic record. The largest intervals are called eons, with each eon containing many millions of years.

In precambarian time the processes that affect Earth's surface have lessened the erosion on the surface. Earth was being hit by meteorites every second. Now there is water erosion and there wasn't back then. The surface changes have lessened over time.

Answer 2

Answer:

a. The formation of the geological time scale was done by the scientists by illustrating the order and time that when the prime Earth events took place for the last 4.5 billion years ago. The scale illustrates the first time plants originated on Earth, the first time animals were seen on the planet, the procedures, which produced mountains and the extinction of unique species like dinosaurs.  

b. The geological time scale is arranged into intervals, which are known as Eons, Eras, Periods, and Ages. Of these, the Eons is the largest interval, where each eon signifies many millions of years. The Eons are differentiated into Eras that begin and terminate with substantial modifications in the living species on the surface of the Earth. In each Era, there exist various periods that are further subdifferential into various short epochs.  

c. The procedures, which modified the surface of the Earth at the time of Precambrian time was variations in climatic condition, which resulted due to development of the planet, and afterward due to the origination of complex and multicellular species.