Here's what science has to say: For millennia, humans assumed that the Earth was about as old as we were. Those dating methodologies didn't hold up to modern science, as it eventually became clear that the birth of our planet far predates the origin of humankind.
In Roman times, theorists guessed that Earth started around the time of the Trojan war — the earliest event in their historical record. Scientists now know the Earth is actually 4.54 billion years old, an age built on many lines of evidence from the geologic record.
There are two basic approaches: relative age dating, and absolute age dating.
Here is an easy-to understand analogy for your students: relative age dating is like saying that your grandfather is older than you.
Are we simply learning more through better science and technology or is this the result of a continuing trend away from the Bible?
Estimates for the Age of the Earth: Throughout History – Bible-believers – based on genealogies – about 6,000 years 1779 – Comte de Buffon – 78,000 1786 – Abraham Werner – 1 million years 1800’s – Charles Lyell – estimated 80 million years for the Cenozoic Era alone.
Geologists draw on it and other basic principles ( to determine the relative ages of rocks or features such as faults.
Relative age dating also means paying attention to crosscutting relationships.
He proposed that geologists might learn about Earth's history by sifting through layers of rock, which were laid down over the course of millennia and provide a backward chronology of our planet.He created a catalogue of strata (which all got colorful names such as Lias Blue, and Ditto White) and argued that each one represented a distinct time in Earth's history — a principle known as fossil succession.The accumulating evidence pointed to an extraordinary new idea: that the history of Earth goes back much, much further than any human memory.For this purpose, isochron dating was developed, a process "that solves both of these problems (accurate date, assumptions) at once" (Stasson 1992). 2) The process must occur at a relatively uniform rate.It has been established through extensive experimentation that radioactive decay occurs at a constant rate. In this case, the initial condition is the amount of daughter isotope in the rock when it was formed.Absolute age dating is like saying you are 15 years old and your grandfather is 77 years old.