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Eighth Grade Science Mrs. Lewis
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STARTER 9/26 and 9/27 Analyze the images below. Which individual is older? Which is younger? Explain. Learning Goal: Analyze sedimentary rock and the fossils within them to determine the relative age of each. SPI Compare fossils found in sedimentary rock to determine their relative age.
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RELATIVE DATING Basic Idea:
Using fossil location to recreate a timeline of history. ALWAYS found in sedimentary rocks. Oldest fossils at the bottom. Fossils and rock layers become younger the higher you go in a set of rock layers. Laundry Hamper example Newspaper/Magazine example Line up in age order activity
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Correlation Rock layers in different places can be correlated, or matched up, by matching the rocks and fossils in the layers
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Cross-Cutting Relationships
If an igneous intrusion or a fault cuts through existing rocks, the intrusion/fault is YOUNGER than the rock it cuts through
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Sedimentary rock layers are deposited horizontally
Sedimentary rock layers are deposited horizontally. If they are tilted, folded or broken, it happened later.
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9. C and D 10. F 11. A
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SUMMARY Analyze the TCAP practice test question. Answer
and then explain your choice. Have a great day!
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