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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.
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.
This dating technique is known as radiometric dating.
Before then, the Bible had provided the only estimate for the age of the world: about 6,000 years, with Genesis as the history book.
Hutton's theories were short on evidence at first, but by 1830 most scientists concurred that Noah's ark was more allegory than reality as they documented geological layering.
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.