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6. What do the blue dots represent? The protons in the nucleus of an nyat 7. Use the stop and play buttons to control how fast the decay occurs. 8. Explain what the pie graph looks like at one half life. 9. Explain what the pie graph looks like at 2 half lives, then 3 half lives. 10. What happens to the Carbon-14 by the end of the simulation? 1 1. Repeat #6-9 for Uranium-238 Part II Dating Game 1. Click on the tab for Dating Game 2. Start measurements with living and dead objects on or just under the surface of the Earth. With these objects use Carbon-14 for measurements. 3. Move the double sided arrow on the graph to match the % determined from the probe. 4. Guess the age of the object, and record on the data table. 5. Ancient fossils will have no Carbon-14. You must use the ages of rocks (from Uranium- 238 ) in the same rock layer as the fossils to determine the fossil's age. 6. Switch to Uranium-238. Now make guess and measure the ages of the rocks. Record the data in the table