Question

How long is an eon in years?

Answer 1

HintYou may recall that an eon is related to geologic time scales that are used to describe the time when various geologic events took place. You could give a brief note on the importance and hence a brief note on this time scale. Then you could recall how many years an eon represents.

Complete answer:
In the question, we are asked to find how many years are there in one eon or in other words, how long is an eon in years.
Eon is known to be one of the geologic time scales. It is actually the longest of all the geologic times where eras are the second-longest. It is basically one of the primary divisions of time. Eons are also further divided into eras which are further divided into periods, epochs and ages. You should know that we have recognized a total of three eons which are Phanerozoic eon that dates from the present back to the Cambrian period, then we have Proterozoic Eon and then the Archaean eon.
If you want to express one eon in terms of years, it is known to be referring to a span of one billion years.

Hence, we found that an eon is known to be one billion years long.

Note: The geological strata are classified by a system of chronological dating called the geologic time scale or the GTS. This time scale is basically used by geologists, palaeontologists, etc thereby relating various geological events to this time scale. This was introduced through various important researches.