What is the difference between relative dating and radiometric dating
Students begin by observing a photograph and a diagram of rock layers near Whanganui, watch an animation about how the layers were formed, then use an interactive labelling diagram to work out the order in which the rocks were created.
The activity offers literacy opportunities as well as practice using the science capability 'Interpret representations'.
Throughout the history of life, different organisms have appeared, flourished and become extinct.
Many of these organisms have left their remains as fossils in sedimentary rocks.
Because of their unique decay rates, different elements are used for dating different age ranges.Relative dating is used to arrange geological events, and the rocks they leave behind, in a sequence.