ch 27.4 Flashcards
1
Q
process of assigning exact numerical age an organism object or an event
A
absolute dating
2
Q
process of placing objects or events in proper order in time
A
relative dating
3
Q
states that the law of nature operate today they have in the past
A
uniformitarianism
4
Q
states that in undisturbed sequence of sedimentary rock layers youngest rocks will be the top oldest rocks will be at the bottem
A
principle of superposition
5
Q
gaps in the rock record during either erosion occurred or deposition was absent
A
unconfortmities
6
Q
remains or traces of organisms found in the geologic rock record
A
fossils
