The History of the Earth Review
My Notes
Fossils are usually found in sedimentary rocks.
Why?
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Fossils can be used to study past climates and environments.
Describe how this can happen using the following vocab terms: geologist, geological, fossil, analysis, evidence
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In all environments, organisms with similar needs may complete with one another for resources needed to survive and
grow.
Write a sentence for each vocab term which clearly connects it to the key idea above.
extinction__________________________________________________________________________________________
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evolution__________________________________________________________________________________________
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environment__________________________________________________________________________________________
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Extinction of a species occurs when the environment changes and the adaptive characteristics of the species are
insufficient to permit its survival.
On the lines below, explain this fact to your 6 year old cousin in 6 year old language. ____________________
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Extinction of species is common.
Provide one significant detail to support this idea. ________________________________________________
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Fossils are evidence that a great variety of species existed in the past.
The species that I thought was most interesting was ______________________________________________
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Many thousands of layers of sedimentary rock provide evidence for the long history of earth and for the long history of
changing life forms whose remains are found in the rocks.
Which layer is the oldest? ______
1
How do you know?
2
3
.
Recently deposited rock layers are more likely to contain fossils resembling existing species.
Why might I finish this idea with a “DUH?”
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Although the time needed for change in a species is usually great, some species of insects and bacteria have undergone
significant change in just a few years. (NO wonder they’re everywhere!)
Now let’
The geologic time scale interpreted from rock strata provides a way to organize Earth’s history. Analysis of rock strata
provides a way to organize Earth’s History. Analysis of rack strata and the fossil record provide only relative dates, not an
absolute scale.
Show 3 drawings that illustrate the meaning of the following words: rock strata, relative date, and absolute
scale