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Fossils: Understanding Relative and Absolute Time

Learn about different types of fossils, their formation, and how they help determine relative and absolute ages of rock layers. Explore concepts like superposition, cross-cutting relationships, and unconformities. Discover the significance of index fossils and the decay of radioactive elements.

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Fossils: Understanding Relative and Absolute Time

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  1. Fossils 1

  2. Fossils 2

  3. Relative Time

  4. Absolute Time

  5. General 1

  6. General 2

  7. Relative Time Fossil 1 Absolute Time General 2 Fossil 2 General 1 $100 $100 $100 $100 $100 $100 $200 $200 $200 $200 $200 $200 $300 $300 $300 $300 $300 $300 $400 $400 $400 $400 $400 $400 $500 $500 $500 $500 $500 $500

  8. Most fossils do not contain any original organic material. True or False

  9. True

  10. An example of these type of fossils are footprints and feces.

  11. Trace fossils

  12. The empty space in a rock where remains were dissolved away.

  13. mold

  14. Daily Half!!

  15. Fossils formed where the remains are turned to stone.

  16. petrified

  17. Fossils where the soft and hard parts are intact.

  18. Preserved remains

  19. Fossils form when an organism is buried quickly or slowly?

  20. quickly

  21. Fossilized tree sap

  22. amber

  23. Thin films of carbon left behind as a fossil.

  24. Carbon films or imprints

  25. Daily Double!!

  26. A filled fossil mold.

  27. cast

  28. Widely distributed, common, and easily identifiable fossils used to correlate rock layers.

  29. Index fossils

  30. The Principal of Superposition states that the youngest rock layers are found _____ and the oldest are found ______.

  31. On top, on bottom

  32. The sequence that events occur and not the actual age is called this.

  33. Relative age

  34. The principle that states that the rock layers that cross other rock layers are younger than the rock layers they cross.

  35. Cross-cutting relationships

  36. Gaps or breaks in the rock record.

  37. unconformities

  38. Daily Half!!

  39. Name one of the two common types of cross-cutting.

  40. Igneous intrusions and faults

  41. The radioactive element is known as this.

  42. parent

  43. The non radioactive element is known as this.

  44. daughter

  45. The time it takes half of a radioactive element to decay is called this.

  46. Half life

  47. This many half lives have occurred if there is 1/16 of the original radioactive element remaining.

  48. 4

  49. The half life of Carbon 14.

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