G3 T7 Fossils L2 Fossils as a record March 8
Presentation
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Science
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3rd Grade
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Practice Problem
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Hard
alaa hussein
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16 Slides • 0 Questions
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G3 T7 Fossils L2 Fossils as a record
Objective: I can describe what a fossil record is.
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The Fossil Records
Scientists use the informations they gather from rocks and fossils to know what Earth was like through out it's history.
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Fossil Record
A record of Earth's past is found in the layers of rocks and the fossils within them
Scientists can look at these fossils and find patterns
They have created a fossil record.
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Fossil Record
The total number of fossils found
The fossil record gives a clue of how animal changed over time
Scientists used information from the fossil record to organize earth's history into units of time
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T7 Fossils L2 Fossils as a Record
Objective: I can describe the Earth's Era's
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Fossil record
Scientists have used the information from the fossil record to organize Earth's history into units of time (Eras)
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Paleozoic Era
Early animals in this era lived in the sea
they didn't have Jaw (Jawless fishes)
a mass extinction happened
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Mesozoic Era
Dinosaurs lived in the land, sea, and sky.
A mass extinction happened
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Cenozoic Era
The era of the monkeys, apes, and humans
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Earth's Eras
Paleozoic era (Jawless sea animals)
Mesozoic(dinosaurs)
Cenozoic (Monkeys, apes, and humans)
Mass extinction after paleozoic and mesozoic)
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Index Fossils
Scientists can use other fossils from the same rock layer to know the age of fossils.
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Index Fossils
Fossils of organisms that lived for a short known time.
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G3 T7 Fossils L2 Fossils as a record
Objective: I can describe what a fossil record is.
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