Exam 2026/27 Update, Questions & Answers
(Verified Answers) | Pass On First Attempt
Basalt - answer-Ocean crust composition
Nebular - answer-Theory of how solar system formed
earth system science - answer-combining the knowledge of many disciplines in the study of the
planet and its global environmental problems
crust, mantle, core - answer-earth's compositional layers
lithosphere, asthenosphere, mesosphere, outer and inner core - answer-earth's physical layers
rock cycle - answer-cycle showing how earth's materials are recycled to become other materials
Alfred Wegener - answer-Scientist who proposed Continental Drift Hypothesis
Harry Hess - answer-Scientist who proposed "Sea Floor Spreading" Hypothesis
Plate tectonics theory - answer-all encompassing theory explaining the movement of the earth's
lithospheric plates
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, Polymorphs - answer-graphite/diamonds
calcite/aragonite
minerals with same composition but differing atomic arrangement
Subduction zone - answer-plate convergence where ocean crust dives beneath continental
crust; compressional stress
mid-ocean ridge - answer-plate divergence; tensional stress
transform fault boundary - answer-plates slide past each other; shear stress
amorphous solid - answer-solid with NO orderly arrangement of atoms
crystalline solid - answer-solid with regular, repeating atomic structure
mineral - answer-crystalline, natural occurring, inorganic solid with a definite chemical
composition
Steno's Law - answer-angle between equivalent faces of crystals of the same mineral are always
the same
Silicates - answer-the most common mineral class in earth's crust
silicate minerals - answer-quartz, feldspar, mica, olivine, amphibole, pyroxene, garnet
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