Structure of the Earth easily than does the upper mantle (chemical changes within the mantle may also be important). The viscosity of the mantle ranges between 10 and 10 Pa·s, depending on depth. In comparison, the viscosity of water is approximately 10 Pa·s and that of pitch is 10 Pa·s. The source of heat that drives plate tectonics is the primordial heat left over from the planet’s formation as well as the radioactive decay of uranium, thorium, and potassium in Earth’s crust and mantle. The average density of Earth is . Because the average density of surface material is only around , we must
We Do What We Want We Do What We Want We Do What We Want is the fifth studio album by the American rock band Emery. The album was released on March 29, 2011 through Tooth & Nail Records and Solid State Records. Shortly after announcing the release of "We Do What We Want", founding bassist Devin Shelton announced he would be taking an indefinite hiatus from Emery. Emery was in the process of working on more stripped-down acoustic album when guitarist/vocalist Devin Shelton decided to take an indefinite leave of absence from the group. After his departure, the remaining four members made the conscious