In Assignment 3, we began exploring the age of the Earth. Through presentation and discussion of individual ideas, the class reached agreements as to the best way to complete each of the prompts.
You worked in small groups and as a class to complete the "If Scientists Think. Today's assignment will allow you to compare and contrast your ideas to some of the actual methods scientists used to develop an estimation of the age of the Earth.
This is a relatively long activity so stay focused on your work.
Let your TA or Professor see your Certificate of Completion once you reach that screen at the end of the activity.
Following this introduction, there are several links to different sites concerning the methods scientists use to assist them in estimating the age of the Earth.
You will investigate Steno's Laws, radiometric dating, and then visit an interactive site that will help you better understand how to tell time - with geology! As you proceed through Assignment 4, be sure to compare your answers from "If Scientists Think. ." to the actual methods scientists use to estimate the age of prehistoric objects.
Steno developed a set of Laws (Steno's Laws) to help explain his method of inferring the ages of geological structures.
These laws are a set of hypotheses that the scientific community accepts as a starting basis without absolute proof.
The process of Relative Dating was established by Nicholaus Steno in the 1600's.The web site is simple, especially at the begnining, yet allows you to visualize relationships among the main concepts you have been studying.The site ends with a short quiz - you should get a perfect score if you understand Web Assisgnment 4.Keep these principles in mind as you progress through the rest of the activities in this assignment.It would benefit your understanding of this material if you studied the rest of this website on your own, but it is not required for class.