Test Yourself On Fossils and Dating Flashcards

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Column a	Column b
1. The remains or evidence of a living thing.	A. Extrusion
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2. A mold is filled in by minerals in the sediment.	B. Cast
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3. In a series of sedimentary rock layers, the oldest layer is on the bottom.	C. Freezing - Preservation of an Entire Organism
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4. Magma that has forced its way into layers of rock from below and hardened (become igneous rock).	D. Mold
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5. Igneous rock that formed on the Earth’s surface.	E. Preservation of an Entire Organism
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6. Determining the order of events, even if the exact time is uncertain.	F. Fossils
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7. The soft and hard parts of the organisms disappear leaving an empty space with the same shape as the organism.	G. Relative Dating
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8. The assumption of early geologists that sediments containing similar fossils were of similar ages, regardless of where on the surface of the earth the sediments were found.	H. Law of Superposition
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9. Determining the exact time of an event, or the exact age of an object.	I. Amber - Preservation of an Entire Organism
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10. Insects become trapped and preserved in hardened tree sap (resin).	J. Petrification
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11. Examination of strata (layers) to determine age (called stratigraphic time).	K. Uniformitarianism
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12. A theory developed by Hutton and Lyell commonly explained as “the present is the key to the past”.	L. Absolute Dating
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13. Ex: Wooly mammoth fossil	M. Stratigraphic Principles
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14. Fossils of organisms that lived during only one period of time.	N. Imprints
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15. (Means turning into stone) - as water seeps through the earth it dissolves minerals in the mud and sand. As the water evaporates, the minerals are left behind.	O. Radioactive Dating
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16. An object leaves an impression in soft sediments such as mud. When the sediments harden into rock, the imprint is preserved as a fossil.	P. Index Fossils
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17. Using the half-life of radioactive isotopes (such as Carbon-14) to determine the age of an object.	Q. Intrusion
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18. Fossilized excrement of animals	R. Fault
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19. A break or crack along which rocks move.	S. Coprolites
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20. Decay was stopped completely (or slowed to almost zero), thus preserving the organism’s body.	T. Biostratography
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Fossils And Dating

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Fossils And Dating

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