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Grier EOG Review 15

Chapter 15 Vocabulary

QuestionAnswer
Person who studies past life paleontologist
dating an object by its position in rock layers relative dating
younger rocks lie over older rocks superposition
a layer of missing rocks(moved by erosion) unconformity
time it takes for half a radioactive sample to decay half-life
footprints of a dinosaur trace fossil
cavity in a rock left by a shell mold
remains of past life fossil
"Age of Reptiles" mesozic era
"Age of Mammals" cenozoic era
"Ancient Life" paleozoic era
Created by: scienceeagle
Popular Earth Science sets

 

 



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