Physical Science Activities Manual ________________________________________________________________________________________________________________ ________________________________________________________________________________________________________________ Center of Excellence for Science and Mathematics Education at The University of Martin students predict. Would it be four times as long, since you started with four times as many "atoms"? Would it be one fourth as long? [The "half-life" will not change. It is not dependent upon the number of atoms you start with. We saw that to some extent in number 8 above.] H. Hopefully the students can draw the conclusion that the half-life is not dependent on the initial quantity. This is not to be confused with the Exploration Activity where the "half-life" was imposed on the exercise. I. Many naturally occurring processes in this universe other than radioactive decay proceed in a manner similar to that illustrated by the sugar cube isotopes. A very
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