1st semester final Minerals – two most common in earth’s crust / main groups / what determines a mineral / cleavage & fracture Rocks – three types / rock cycle / how to identify them / Intrusive and extrusive igneous / contact and regional metamorphic / stratification Energy –Nuclear fission / nuclear fusion / geothermal / hydroelectric / fossil fuels – hydrocarbons / acid participation Relative age & absolute age- / index fossil / radiometric dating –half-lives / fossil formations Geologic time – eons / era / periods Law of superposition / uniformitarianism Scientific method – Theory & laws Earth Science – 4 branches Bio chemical cycles – Carbon / Nitrogen/ phosphorous / Water Ecosystems- Change / Balance / energy transfer Earth interior – layers / lithosphere / asthenosphere / Mesosphere / core / mantle / crust Gravity / Mass / density Maps -Longitude / latitude / isograms / topographic map / contour lines Atoms – Physical and Chemical properties / subatomic particles / periodic table / atomic mass Sea floor spreading – geomagnetic reversal / mid ocean ridge Continental drift – Madagascar / climate changes / evidences Plate tectonics – divergent / convergent / transform/ subduction / ridge push, slab pull /Convection Deformation of Crust - Oceanic & continental crust / trenches / folded mountains / anticline, syncline / Isostasy /stress / tension / ductile Faults – Normal / reverse / strike slip / hang wall, footwall / brittle Earthquakes- elastic rebound / magnitude, intensity / focus / epicenter / seismic waves P, S, Surface / shadow zone / ring of fire