What is radiometric dating and how is it used
Relative dating is used to determine the relative ages of geologic strata, artifacts, historical events…
yes, it does actually because, radiometric dating determines the half life of the uranium in the rock. Carbon-14 has a short half-life and is normally only used by archaeologists or anyone working on sediments less than 50,000 years old. Scientists used many different isotopes for dating rocks… You cannot use mods made for the original Half-Life on Half-Life: Source because they run on different engines and it won't work.
The universe is full of naturally occurring radioactive elements.
However, there is also a neutron-rich radioactive isotope of carbon.
Carbon-14 is present a level of about 1 part per trillion in the atmosphere--for every trillion particles of carbon one is C-14.
While this is an extremely trace amount, over time it is incorporated into the systems of most life forms.
By dating these surrounding layers, they can figure out the youngest and oldest that the fossil might be; this is known as "bracketing" the age of the sedimentary layer in which the fossils occur.
Teach your students about absolute dating: Determining age of rocks and fossils, a classroom activity for grades 9-12.
Fossils are generally found in sedimentary rock not igneous rock.