Rust

AbsoluteDating

RelativeDating

LawofSuperposition

IndexFossils

AbsoluteDating–The____________ageofanobject.

� Foundbydeterminingtheamountof______________________materialintheobject.

RelativeDating-Theageofanobject________________toanotherobjectorevent.

� Layersofrockshowthe________________ageofeach____________.

àInundisturbedlayersofrock,the____________layeristhe____________andtheageoftherocklayersgets_____________asyoumove____________.

Oftenrocklayerswillget_______________byan____________,______________,orbymolten___________seepingintoit,causingthelayerstorealign.

� An__________fossilisafossilofanorganismthatlivedallacrossthe_____________,butonlyfora___________periodoftime.

� IndexFossilshelpscientistdeterminethe________________ageofrocklayerslocatedindifferentplaces.

Thefossils______________tothesurfacearemostsimilartotheanimalsalive__________.