Question

Please Help:D.... i need help
Define the geologic time scale and explain why geologists use it to show Earth's history.

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Answer 1

The geologic time scale is used to group periods of time together that share a common geologic feature and/or biologic feature. It is a very quick way for us to talk about a rock or sequence of rocks in a context that we readily understand, without having to specify a number or range of numbers.

Here's kind of a silly example. To geologists, the movie "Jurassic Park," would have referred to a period of time between about 150 - 200 million years ago. We know what was going on with rocks and such in the world at that time, and we also know what kinds of plants and animals were living in that time... and "Jurassic" made all of us geologists understand the same thing without length explanations.

This is a FUN fact to share - "Jurassic Park" was totally wrong! Based on the dinosaurs that they showed, the movie should have been called "Cretaceous Park."

It's just a quick way for geologists to understand things, in a somewhat similar way that biologists classify organisms into groups - they can say something in one word, and all of the biologists who they're talking to will know what they mean without a long explanation.


souce: https://answers.yahoo.com/question/index?qid=20091111160147AADTRYJ

Answer 2

.... i have googled this several times and ive come across this answer... i need an answer from a person not a website like yahoo. Thanks for trying