GEOL 1001 Chapter : Geol 9 7 11
Document Summary
Powerful ides based on multiple lines of evidence. Today we will talk about plate tectonics as well as the rest of the semester. Often referred to as a paradigm of how the earth works . Earth"s outer shell is broken into rigid plats that move. Powerful theory that explains a lot about the earth. Rigid part of the earth (plates) they behave like brittle objects". Over long periods of time is capable of bending until the point of breaking. Made up of material that we called the crust and upper mantle. First described by archimedes floating sold displace water equal to their mass. An iceberg sinks until the mass of the water it displaces is equal to the total mass of the iceberg. The color present different plate on the graphic. There are about 5 to 6 that have continents riding along with them. Plates to at a rate 1 -15 cm/yr. In the experiment they are both in equilibrium.
