Activity 8 3 absolute dating of rocks and fossils dating culture dead

Radioactive isotopes are unstable and undergo spontaneous nuclear reactions, emitting particles and/or wavelike radiation.The decay of any one nucleus cannot be predicted, but alarge group of identical nuclei decay at a predictable rate.The atom's nucleus is composed of protons and neutrons, which are much more massive than electrons.When an element has atoms that differ in the number of neutrons, these atoms are called different isotopes of the element.

Through this simulation, they will gain an understanding of how scientists are able to use isotopes such as U-235 and Pb-207 to determine the age of ancient minerals. Science helps drive technology, as it addresses questions that demand more sophisticated instruments and provides principles for better instrumentation and technique.These use radioactive minerals in rocks as geological clocks.The atoms of some chemical elements have different forms, called isotopes.The bag itself represents the fossil and the beads inside represent some of the millions of atoms that make it up.As scientists, their job is to count the number of parent and daughter isotope atoms in each bag, and from this data to determine how many half-lives the isotope has gone through and therefore the age of the rock.