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Science Prezi


Geoff Dunn

on 24 March 2010

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Transcript of Science Prezi

Relative and Absolute age Relative Age

Absolute Age
Varves on the side of the rocks Erosion can be used to find absolute age Relative age can determine
what order rocks formed in ha Layers of rock Relative age indicates that one layer is
older or younger than another Relative age does not show
the rock's age in years Relative age shows an order of events that
took place in the past(Strata) Scientists can use relative age to determine
what order the layers of rock formed in After scientists know what order the layers
formed in they can determine a relative age for each one Absolute age determines a
rock's age in years Scientists use absolute age to learn
more about Earth's history Scientists use many methods to
determine absolute age Erosion is used to find absolute age The use of erosion can be used to determine the absolute age of a geographical area that formed in the last 10,000 to 20,000 years Varves(light colored bands that are found when rocks are cut) are counted to determine absolute age. Absolute age can be found
by calculating the rate of desposition
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