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IMSA Planetary Geology Test
1. Earthquake:
Answer any seismic wave
2. Differentiation in Planet:
Answer -lighter material on top (light = rock) -heavier material under (dense = metal)
3. Mantle:
Answer made of rock (silicon, IRON, MAGNESIUM, aluminum, oxygen) also made of peridotite, ultramafic, very dense, 45% SiO2 The mantle is solid but under a great deal of pressure & at high temperature it moves like a very viscous fluid, weaker, lower viscosity than crust, ductile
4. Inner core:
Answer solid iron
- Outer core
Answer Molten iron (Makes magnetic field because its molten)
6. Crust:
Answer thin, less dense, more rigid & stronger, more brittle
- Rock cycle
Answer insert picture 1 / 2
8. Sedimentary rock:
Answer from sediments from erosion needs pressure formed by the deposition of material usually forming strata & bedding
9. Metamorphic rock:
Answer heat & pressure changes the physical and/or chemical nature of the rock without complete melting
10. Igneous rock:
Answer UMIF - more SiO2, less density Was once completely molten Contains crystals that formed as the rock cooled Mixture of SiO2, MgO, FeO, Al2O3, Fe2O3, CaO, Na2O, K2O, and others
11. Types of igneous rock:
Answer Felsic, intermediate, mafic, and ultramafic
12. Felsic:
Answer (andic) > 66% SiO2, higher amounts of Al, Na, K, lowest density p = 2.7, highest viscosity, lowest Fe Mg, (e.g. granite), continental crust
13. Intermediate:
Answer (andesitic) between 52%-66% SiO2, even less Mg & Fe, more Al and Ca, p = 2.85, higher viscosity, mixture of felsic and mafic, found in subduction zones.
14. Mafic:
Answer (basic) between 45%-52% Sio2, lower amounts of Mg & Fe, more Al, Ca, low density p = 3, higher viscosity, basalt (example), oceanic crust
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