Download 1-9 Study Guide and Quiz over Fossils.notebook

1­9 Study Guide and Quiz over Fossils.notebook
January 11, 2012
Monday, January 9, 2012
1. Please get out your homework (Fossil Study Guide). 2. Be ready to go! I am doing a homework check.
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1­9 Study Guide and Quiz over Fossils.notebook
January 11, 2012
1. What are fossils formed from? remains of living organisms preserved in
Earth's crust
2. What process begins after an animal or plant dies? decomposition
3. Describe what decomposes first with an organism that dies. The soft tissue like organs, leaves, skin, and muscles
4. Does the hard tissue of an organism decompose before or after soft tissue? after
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1­9 Study Guide and Quiz over Fossils.notebook
January 11, 2012
5. What type of rock does a fossil form in? sedimentary
Mineral Replacement
minerals fill and crystallize the spaces within bones,
shells, and teeth
Carbon Film
carbon rich remnant of a plant or animal that appears
like a flat-two dimensional imprint
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1­9 Study Guide and Quiz over Fossils.notebook
January 11, 2012
Trace Fossil
Preserved remains of an animal's activity.
Preserved Remains
Tissue from a once living organism that is protected
from decomposition.
Mold and Cast
The mold is the hollow impression and the cast is the
preserved replica.
7. What are index fossils? (What 2 things do we look for in index fossils to make them stand out compared to regular fossils?) 1. Lived for a short period of time
2. Found in many different locations
8. True or False Not all fossils are index fossils.
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1­9 Study Guide and Quiz over Fossils.notebook
January 11, 2012
9. Which would make a better index fossil, an Actinocoelia, a type of sponge that lived for a few million years during the middle Permian period, or a horseshoe crab that has been around for over 300 million years and is still found today? Make sure to explain WHY. The Actinocoelia because it
lived for a short period of time
and in many different locations.
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