10Half-Life Problem Complete the table above. Time Elapsed (years)Grams of Uramium-228 Remaining22822446688Complete the table above.Determine the half-life of Uramium-228. Explain your answer.Use the data in the table above to produce a graph in your notebook.4. Predict how much Uramiun-228 will remain after 2 half-lives.
11Essential Questions1. Summarize why calculations of absolute age based on rates of erosion and deposition can be inaccurate.2. Describe varves, and describe how and where they form.3. Explain how radiometric dating is used to estimate absolute age.4. Suppose you have a shark’s tooth that you suspect is about 15,000 years old. Would you use 238U or 14C to date the tooth? Explain your answer.