You will need to: Obtain a roll of paper such as that used in an adding machine.

Question

You will need to:

Obtain a roll of paper such as that used in an adding machine. The roll of paper needs to be 127 feet long. You may purchase one at Kroger, Walmart, an office supply store, etc.

The length of your paper will be a time line that represents the amount of time that has passed since the Earth (and the other planets in our solar system) formed - 4.6 billion years. Using the scale of ONE INCH EQUALS THREE MILLION YEARS, enter all of the following events at the correct place on your time line. START at the beginning, with the formation of the Earth. At the end, you will have to "scrunch" a lot of events into a very short segment of your paper. Be creative, and solve this problem as best you can.

Hint: one billion years = 1,000 million years

Hint: you will need to subtract the years ago for one event, from the years ago for another, to obtain the number of years (and inches) BETWEEN them.

Explanation / Answer

4.6 billion years mean 4600 million years.After one inch it will be 4300 million years ago, evidence of first life was found, however the first to evolve were the chemoautotrophs, then after one inch it will be 4000 milion years ago, autotrophic bacteria evolved.Then after one inch it will be 3700 milion years ago. At this time fermentating bacterias evolved.

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