Carbon dating for students Amatuture
Roll the Dice & Use Radiometric Dating to Find Out" hands-on geology project.
With dice at the ready, students can roll their way to better understanding of how an isotope decays.
But when it comes to talking about a rock that may be billions of years old, what do we do?
What scale can we use to help evaluate an object's timeline and history?
Atmospheric nuclear weapon tests almost doubled the concentration of Radiocarbon dating, also known as the C14 dating method, is a way of telling how old something is. Plants take up atmospheric carbon dioxide by photosynthesis, and are eaten by animals, so every living thing is constantly exchanging carbon-14 with its environment as long as it lives. In 1958 Hessel de Vries showed that the concentration of carbon-14 in the atmosphere varies with time and locality.
Carbon has different isotopes, which are usually not radioactive; C is the radioactive one, its half-life, or time it takes to radioactively decay to one half its original amount, is about 5,730 years.
It also provides measurements to several national museums, academic staff in a large number of universities worldwide, as well as many UK and European commercial archaeological units.
Half-life is a mathematical concept that can be difficult for students to visualize and interact with.Teachers may wish to seek additional background on carbon-14 or half-life before beginning this activity.This additional information may also help teachers to generate additional follow-up questions and extensions of this project.1.Tell the class that today they will become an artifact.You may wish to bring in an artifact to show or a picture of the artifact you want your class to image to be.