GEOL 1003 Chapter : Ch10 Chemical Cycles 1
Document Summary
A moist temperate forest with deeply rooted plants will expedite weathering rates. Introduction (cid:149) earth is a system = lithosphere + atmosphere + hydrosphere + biosphere (cid:149) earth is a closed system: only energy enters and leaves, no matters/elements do so. Instead, matters cycle between the lithosphere, atmosphere, hydrosphere, and biosphere. Outline (cid:149) focus on two chemical elements: carbon (c) and oxygen (o2) (cid:149) chemical reservoirs (cid:149) their chemical cycle. Once in the earth system, a particular element may exist in many different forms (or compounds). For most elements, they are conservative in their total mass. The exchanges between these different reservoirs are called fluxes. = a body of chemical entity that occupies a particular space. = rate at which chemicals flow from one reservoir to another (cid:149) (cid:149) If flux in=flux out, the reservoir is stable. If flux in (cid:3405) flux out, reservoirs change: some reservoirs will expand, while others contract.
