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Unformatted text preview: Buring coal to create acid rain 8 Ch.6 Grading/ cross bearing Ch,7 Metamorphism Ch.8 Relative dating Age of earth Order of three paleotheric era Eon Pheozoic era began Draw fault Ch.9 Eroginese Composition of earth Outer core liquid Gravity anomaly Curry point Current theory what casues earth’s magnetic field During magnetic reversal, two are correctexposes earth to ultraviolete radiation – reverses the magnetic poles How often it occurs 20 Three – metal core, spin axis to set liquid in motion, …. Super continent – pangea...
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- Spring '09
- Geology, Mt. Saint Helens, starts igneous rock, conduction convention- radiation, Inner Outer Planets