GEOL 1001 Chapter : Geology 1001
Document Summary
~~chapter 1: the earth system: the scientific model, hypothesis: -a tentative explanation observing results, supported, theory a supported idea/hypothesis, supported, scientific model basis for explanation and prediction. ** in order to develop a legitimate hypothesis one must first observe, question, and experiment then formulate the hypothesis. The hypothesis after several repeated supportive test is elevated to a. If the theory is supported by numerous tests it is then a scientific model. *** discovery of a layered earth: the earth is not one homogenous rock. Key observation: refraction (bending) of some vibration waves is produced by earthquakes aka (seismic waves) Core-mantle boundary 2900 km depth separates very low density material from very high density material. Inner core (solid) outer core (liquid) boundary at 5,150 km depth. Moho discontinuity is the boundary between mantle and ocean crust at 10 km. Continental crust-mantle boundary is up to 40 km deep. The less dense continental crust floats on denser mantle.
