I) E learnuflvs.net PhySlCS'l . Apple DlSnDl/ ESPN 'i'ahool Bing Gncglo Banner Yahoo [B Educator - Educatorui 5 Lessons G Assessments V Gradebook 3 Email 11 0 Tools ' My Courses ' & Nao y ' MENU NOTES PRINT LIBRARY TOOLKIT 10f1' HOME PHYSICS : MODULE 07 EINSTEIN'S FALLS : 07.06 RADIOACTIVITY DATING LAB Radioactivity Dating Lab Purpose: To explore halflife of a radioisotope introduction: In this lab, you will investigate radiometric dating: The pennies represent the radio nuclide contained in our sample: An unstable nucleus decays in order to achieve a new nucleus that is either stable or a new nucleus that. in turn, Will decay. This halfelife is intrinsic to the isotope and cannot be altered by any extrinsic parameters such as temperature, pressure, or light: This decay of radioactive nuclei is a random event, The larger the number of radioactive nuclei, the closer the data will be to the probability of 50% of the sample decaying in one halfelife. Each radio nuclide has its own characteristic halfelite, Haltelives range from nanoseconds to billions of years. Materials: 200 pennies. Graphical Analysis Alternative: Instead of pennies, you may use a bag of plain M&Ms or the following interactive: H learn.flvs.net (3 Apple Disney ESPN 'i'ahool Bing Gocgle Banner Yahoo theodvsseus Englishspani oogleSearch [B Educator - EducatorUi E E Lessons G Assessments V Gradebook x Email 11 0 Tools V My Courses V 3 Naomy V MENU NOTES PRINT LIBRARY TOOLKIT 1 of 1 V HOME Procedure: 1. Count the number of pennies and place this number in the data table under \"Number of Nuclei in the Sample." This number represents the total number of radioactive nuclei contained in our radioactive sample at the start, Place these pennies into a container. 2. Dump the pennies. The pennies that landed headsup Will represent decayed nuclei, the pennies tails-up are your remaining sample. Remove the \"decayed" pennies. Count the number of pennies that decayed and count the remaining pennies in the sample, and place the data in the appropriate column in the data table. 3, Repeat step 2 until all of the pennies have decayed. 4 Answer these questions. . 07.06 Radioactivity Dating Lab 1. Complete lab and the Questions for this lesson. 2. Submit your work to the 07.06 Radioactivity Dating Lab assessment. Lab Unless OtherWISe Noted All Content 2023 Florida Vlltual School 0 Florida Virtual U E learn.flvs.net C PhysmsiV' :4907 Apple Disney ESPN Yahool Blng Googie Banner Yahoo theodysseus Englishspani oogieSearch E Educator - EducatorUi E E Lessons G Assessments \\l Gradebook x Email 11 6 Tools V My Courses V .'. Naomy V . Graph the \"Number of Nuclei in the Sample" versus the \"Half-life Number " lithe sample has 1/8 of the radioactive nuclei left, how many half-lives would the sample have gone through? . Each time you dumped the pennies, one half-life passed; it has been shown that the halfliie for this radioactive isotope is 20 years In the year 2000, an archaeology team unearths pottery and is using this isotope for radiometric dating to place the age of the pottery. it is shown that 95% of the nuclei have decayed. Using your graph, approximately how long ago was the pottery made? . While investigating the half-life of a radioactive isotope, the following data was gathered. Graph the data; this graph should resemble the graph from your lab Notice that you have a y- value at x = 0. This is called a decay curve. Answer the tollowmg questions Time Mass Remaining of the Isotope (hr) (9) 0.0 40.00 3.0 20.00 6.0 10.00 9.0 5.00 120 2.50 15.0 1.25 18.0 0.63 A. Approximately how much mass remains after 8.0 hours? B. Approximately how much mass remains after 21.0 hours? C, What is the haltrlife for this isotope