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Geologists have divided Earth's history into a series of time intervals. These time intervals are not equal in length like the hours in a day. Instead the time intervals are variable in length. This is because geologic time is divided using significant events in the history of the Earth.

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Q: Why are the eons and eras not equal in length?
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Related questions

What are Eons divided into?


What are the four geological time intervals?

Eons, Eras,Epochs, and period

What does geologic time have to do with eras?

Eras are subdivisions of larger units of geologic time called eons.

How is geologic time organized?

By eons, eras, epochs, and periods.

Why is earths history divided into eras epochs eons?


What is Divided into eons and eras and periods and epochs?

Time. The game.

What units divide the geologic scale?

The units that divide the geologic time scale are Eons, Eras, Periods, and Epochs. Eons are the biggest, Eras are the second biggest and so on and so forth. So it goes Eons, Eras, Periods, and then Epochs. I know this because i just took a test on it in science so i know its right.

How long did each eon last?

An eon is equal to one billion years. Eons are divided into eras which can be specific or non specific periods of time.

How is geologic time scale organized?

By eons, eras, epochs, and periods.

Geologic time is divided into priods epochs and what else?

Eras. I think eons , too.

What are the three major units of Earth time?

Eons, eras, and periods, from large to small.

What is a Time scale?

A table that divides up earths histoty into eons, eras,periods,and epochs