High School Earth, Space, and Geophysical Curriculum Essentials May 2009 10. Boulder Valley School District High School Earth, Space, and Geophysical. Science Curriculum Essentials Document. If learning is to endure in a flexible, adaptable way for future use, then teachers must design units.
A curmudgeon with years of practice. Coal ash is the residue from burning coal and contains all of the nonvolatile components of he coal (carbon compounds, sulfur and some metals). The ash is made up of silicates, metals (including toxic metals like mercury and uranium) and some unburnt carbon.
America is the Saudi Arabia of Coal Plant fossils of West Virginia are examples of the fossil flora that comprise the vast coal reserves that are typical in the Eastern United States. Coal is formed from ancient plant material accumulating over long periods of time in swamp conditions so devoid of oxygen that bacteria could not exist to cause decay. Being composed almost entirerly of plant fossils, coal is in effect concentrated sunlight, and is one of our most important fossil fuels. The United States as a whole has more recoverable coal resources than any other country on the planet-- over 262 billion tons-- enough to last over 200 years!