1. D.S.Q.: Anyone that did not do the Fossil Fabricator on Wonderville, go to the computers. On my portaportal under “Fun/Interactive Websites” go to Wonderville. Go the Wonderville menu and click on “Interactive Activities,” and then go to Fossil Fabricator. Anyone that did not do the Fossil Fabricator on Wonderville, go to the computers. On my portaportal under “Fun/Interactive Websites” go to Wonderville. Go the Wonderville menu and click on “Interactive Activities,” and then go to Fossil Fabricator. Describe the following terms in your own words and draw a picture to go with each description: Describe the following terms in your own words and draw a picture to go with each description:  Petrifaction  Amber  Mummification  Trace fossil  Coprolites  Mold  Cast

2. Looking at Fossils Chapter 5 Section 4

3. Investigation Coralville, Iowa got its name because there used to be a living coral reef in the town. Coralville, Iowa got its name because there used to be a living coral reef in the town. What you would see today is a fossilized coral reef. But you know that coral reefs are found in warm tropical oceans and that Iowa is more than 1,000 km away from any ocean! What you would see today is a fossilized coral reef. But you know that coral reefs are found in warm tropical oceans and that Iowa is more than 1,000 km away from any ocean! How did this huge coral reef end up in the middle of Iowa? (Discuss with your neighbor.) How did this huge coral reef end up in the middle of Iowa? (Discuss with your neighbor.)

5. To answer the question, you need to learn about fossils. To answer the question, you need to learn about fossils.

6. Fossils A fossil is any naturally preserved evidence of life. A fossil is any naturally preserved evidence of life.

7. Types of Fossils Fossils in Rocks-when organisms die, the fleshy parts decompose and are buried quickly in sedimentary rock. Fossils in Rocks-when organisms die, the fleshy parts decompose and are buried quickly in sedimentary rock. The hard parts are left to become fossils. The hard parts are left to become fossils.

8. Types of Fossils Mineral Replacement- minerals replace the tissue of organisms. Mineral Replacement- minerals replace the tissue of organisms. Permineralization-minerals fill in pore spaces of an organism's tissues. Permineralization-minerals fill in pore spaces of an organism's tissues. Petrification-occurs when organism’s tissues are completely replaced by minerals. Petrification-occurs when organism’s tissues are completely replaced by minerals.

9. Types of Fossils Fossils in Amber- occurs when insects get stuck in tree sap that hardens. Fossils in Amber- occurs when insects get stuck in tree sap that hardens.

10. Types of Fossils Mummification- occurs when organisms die in dry places, such as deserts, they dry out so fast that there isn’t enough time for the soft parts to decay. Mummification- occurs when organisms die in dry places, such as deserts, they dry out so fast that there isn’t enough time for the soft parts to decay.

11. Types of Fossils Frozen Fossils-occurs when animals are frozen in ice and die. We find them 1000’s of years later when it thaws. Frozen Fossils-occurs when animals are frozen in ice and die. We find them 1000’s of years later when it thaws. Fossils in Tar-occurs when animals are preserved in thick oily tar. Fossils in Tar-occurs when animals are preserved in thick oily tar.

12. Other Types of Fossils Trace Fossil-any naturally preserved evidence of an animal’s activity. Trace Fossil-any naturally preserved evidence of an animal’s activity. Three Types: Three Types: 1. Track-footprint 2. Burrows-shelters made by animals 3. -preserved feces 3. Coprolites-preserved feces

13. Why are tracks and coprolites considered trace fossils? Why are tracks and coprolites considered trace fossils? Discuss with your neighbor. Discuss with your neighbor. They are evidence of animal activity rather than fossilized organisms. They are evidence of animal activity rather than fossilized organisms. BURROW COPROLITE

14. Other Types of Fossils Mold-is a cavity in the ground or rock where a plant or animal was buried. Mold-is a cavity in the ground or rock where a plant or animal was buried.

15. Other Types of Fossils -is an object created when sediment fills a mold and becomes rock. Cast-is an object created when sediment fills a mold and becomes rock.

16. Using Fossils to Interpret the Past Fossils can reveal changes in the environment. Fossils can reveal changes in the environment. Scientists have determined that Iowa was once covered by a shallow sea. Scientists have determined that Iowa was once covered by a shallow sea. Likewise, who would have expected fossils of marine organisms on the top of a mountain? Likewise, who would have expected fossils of marine organisms on the top of a mountain? The presence of these fossils means that rocks were once below the surface of an ocean. The presence of these fossils means that rocks were once below the surface of an ocean.

17. Which layer is the oldest? Which is the youngest?

18. Review Describe two ways that fossils can form. Describe two ways that fossils can form. List two types of fossils that are not part of an organism. List two types of fossils that are not part of an organism.