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The story of this great change in the conception of the history of Earth is not a simple one. The chronicle of this great change can be broken into five periods;

Radiometric dating methods estimate the age of rocks using calculations based on the decay rates of radioactive elements such as uranium, strontium, and potassium. On the surface, radiometric dating methods appear to give powerful support to the statement that life has existed on the earth for hundreds of millions, even billions, of years. We are told that these methods are accurate to a few percent, and that there are many different methods. We are told that of all the radiometric dates that are measured, only a few percent are anomalous. This gives us the impression that all but a small percentage of the dates computed by radiometric methods agree with the assumed ages of the rocks in which they are found, and that all of these various methods almost always give ages that agree with each other to within a few percentage points. Since there doesn't seem to be any systematic error that could cause so many methods to agree with each other so often, it seems that there is no other rational conclusion than to accept these dates as accurate.

  • Pencils
  • Colored Pencils
  • Drawing Paper,
  • Cardstock
  • Handouts:
    Nonsense Cards Set A ,
    Fossils Cards Set B (1) ,
    Fossils Cards Set B (2) ,
    Stratigraphic Section for Set B ,
    Fossil Map of Utah
Additional Resources Books
  • The Amazing Earth Model Book , Donald M. Silver & Patricia J. Wynne, ISBN # 0-590-93089-3
  • The Big Beast Book , Jerry Booth, ISBN #0-316-10266-0
  • Dinosaur-The story behind the scenery , Allan Hagood, ISBN # 0-916122-10-7
  • Dinosaurs of Utah and Dino Destinations , Pat Bagley and Gayle Wharton, ISBN #1566846013
  • The Dinosaur Alphabet Book , Jerry Pallotta
  • Everything You Need to Know About Science , Anne Zeman and Kate Kelly, ISBN # 0-590-49357-4
  • Eyewitness Books, Fossil , Dr. Paul D. Taylor, ISBN # 0-7566-0682-9
  • Eyewitness Books, Rocks and Minerals , Dr. Symes ISBN #0-7894-5805-5
  • The Extinct Alphabet , Jerry Pallotta, ISBN # 088106-471-8
  • The Fossil Factory , Douglas, Niles, and Gregory Eldredge, ISBN #1-57098-417-4
  • Kingfisher Young Knowledge, Rocks and Fossils , Chris Pellant ISBN, #0-7534-5619-2
  • Reader¬ís Digest, Pathfinders, Dinosaurs , Paul Willis, ISBN # 0-7944-0001-9
Videos
  • Earth Science for Children, All About Fossils
  • Eyewitness Dinosaur
  • Eyewitness Prehistoric Life
Additional Media
  • University of Utah Museum of Natural History Fossil Kit Lorie Millward


Relative age dating challenge

Relative age dating challenge