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 on March 29, 2011 through Tooth & Nail Records, and it is also Emery's first album co-released by Tooth & Nail's heavy metal/hardcore punk subdivision Solid State Records. Vocalist Toby Morell has said that he was "proud" of the signing to Solid State, and also described it as "just kind of a good feeling to be wanted by another part of your company and be able to join all the awesome bands." All songs composed by Emery, except "Fix Me" composed by Devin Shelton. Deluxe edition Emery Production We Do What We Want We Do What We Want is the