Part 1: Preparation .us
Name: FORMTEXT ?????Date: FORMTEXT ?????School: FORMTEXT ?????Facilitator: FORMTEXT ?????4.03 Radioactive Decay LabComplete all 5 parts of the radioactive decay lab.Part 1: PreparationGather the following materials:200 pennies1 shoe box or similar sized boxIn this, the pennies represent atoms of a hypothetical radioactive element. Therefore, all 200 items need to be the same size, shape, and type.NOTE: If you cannot find 200 pennies, you may substitute 200 of the same small, round items with two distinct sides (one side to be used as ‘heads’ and one side to be used as ‘tails’). Suggested other options include: nickelsdimesbuttons of the same sizepuzzle pieces from the same puzzleM&M candiesSkittles candiesPart 2: Pre-Lab HypothesisBefore you start the lab, read through the entire lab procedure listed in Part 3 below. Create a hypothesis about how many rounds of shaking and removing the ‘heads up’ pennies it will take to remove all 200 pennies. Your pre-lab hypothesis should be written as a complete sentence.Pre-lab hypothesis: FORMTEXT ?????Part 3: Decay LabFollow the procedure listed below to complete the radioactive decay lab.Place all 200 pennies in a shoebox.Close the shoebox. Shake the shoebox for 4 seconds while holding the lid tightly closed. Open the shoebox and remove all pennies that are now heads up. Count and record the number of pennies remaining in the chart below. Take care not to turn over any pennies as you count the remaining ones.Repeat steps 2 and 3 until you have removed all pennies from the box.Rounds (Shake-and-Removes)# of pennies remaining in boxRound 1 (4 s) FORMTEXT ?????Round 2 (8 s) FORMTEXT ?????Round 3 (12 s) FORMTEXT ?????Round 4 (16 s) FORMTEXT ?????Round 5 (20 s) FORMTEXT ?????Round 6 (24 s) FORMTEXT ?????Round 7 (28 s) FORMTEXT ?????You may not use all the spaces provided or you may need to add more rows!Part 4: Graphing DataCreate a graph of the data you collected. You may use the Insert Chart feature in word processing software like Microsoft Word or Pages for Mac, create the graph in the online Geogebra chart linked on the Task page and take a screenshot of it, draw the graph by hand, or use another graphing program.When you create your graph, be sure to:List “time” on the x-axis and “pennies remaining” on the y-axis. Record each shake-and-remove round as 4 seconds (as shown on the Data Table)Insert graph below.Part 5: Post-Lab QuestionsAnswer the following questions. Describe, in complete sentences, how this experiment models radioactive decay. FORMTEXT ?????How did your pre-lab hypothesis compare to your actual results? Was your prediction correct, close to being accurate, or not even close? FORMTEXT ?????Predict how many more shakes would be necessary for all your pennies to decay if you started with 600 pennies instead of 200. FORMTEXT ????? ................
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