What is the difference between relative time and actual time?

Relative time is the physical subdivision of the rocks found in the Earth's geology and the time and order of events they represent. Absolute time is the measurement taken from the same rocks to determine the amount of time that has expired.

The difference between relative time and actual time is relative time is more of the physical subdivision of the rocks that you will find in the earth's geology and including the time and also the order of events that they represent. Actual time or known as absolute time is basically the measurement that is taken from those same rocks that is used to be determined by the amount of time that has expired.

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radioactive dating, also known as  radioisotope dating  is a process that in  estimating the approximate  age  of  rocks. these data can be analyzed from  the studies dealing with the  decay of the radioactive elements that are present in these rocks. in nature, there are a few types of materials or atoms which are quite unstable and they spontaneously decay or breakdown to form other kinds of atoms.