The plot below represents data from a hypothetical river for which we had 69 years of data.
The probability is reported as something called a Recurrence interval and is reported in "years".
The behavior of all radioactive elements is the same and the time it takes for one-half of the parent atoms to decay to daughter atoms is called the half-life.
Please try to complete these activities without peeking at the answers - this will help you when you get to the quiz at the end!
Geologists use information about the ratio of radioactive (parent) atoms to their decay product (daughter) atoms to understand the age of igneous, metamorphic and sedimentary rocks.
The problems below walk you through the steps for reading points from a line.
You can click on any of the graphs to open a bigger version or you can click the link under the graph to download a pdf of the graph for printing!
This is a general plot that works for any isotope system.Use this plot to answer the questions below about reading points from a line.