EPS SCI 15 Lecture Notes - Lecture 3: Hydrosphere, Outer Core
20 Feb 2018
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Document Summary
The earth consists of a series of concentric shells. Each shel has materials that have unique chemical and physical properties. Around the solid mass of the earth are a concentric layer of water (the oceans) and a thicker layer of gases (the atmosphere). Geological evience indicates that the earth in the past was entirely molten, and compounds/elments were eventually segreagated by density, creating the different shells. Density is the amount of mass contained in a volume, expressed in grams per. For example, if a 3kg cube has sides of length 2cm, then the volume is 2 x 2 x 2 cubic centimeter, or g/cm 3 . = 8cm 3 , the mass is 3000g, and the density is thus 3000g / 8cm 3 = 375g/cm 3 . The greater quantity of mass in a cubic centimeter, the higher density. As the volume of a mass increases, however, the density gets smaller.
