GEO 101 Quiz: Review for Exam 1
12 Oct 2016
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Document Summary
Catastrophism short, human time scales necessitate catastrophic explanation for observed geology. Uniformitarianism created by james hutton geologic time scale and the birth of modern geology: uniform process of change. Geologic time no vestige of a beginning, no prospect of an end : a system of chronological dating that relates geological strata (stratigraphy) to time. Earth history overview: formation of solar system and earth (age, brief description: solar system: How it was made: started as a nebula, spins so fast it flattens and rotates, cools down, turns into current solar system state, earth: Heat from radioactivity and gravitational collapse caused early earth to melt and differentiate into, mantle, and crust. As a single celled organism had evolved 3. 5 billion years ago. First shelled animals evolved about 540 million years ago. First humanoid appeared 7 million years ago. Anything involving plate tectonics and such: crust. Light rock of continents or ocean floors: mantle. Heavy rock, outer half of earth: core.
