Quiz 4 - e70 $0 Physical Geology 1 Name 3[€— V Quiz 4...

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Unformatted text preview: e70 $0 Physical Geology 1 Name: 3 [€— V Quiz 4: Plane Tectonics Lecture Section (circle). Mulliplecholeeflmplse. lflpflmthirckthehfitm. \\ In plate testonic theory: a. The continents are assumed to plow through the ocean crust like hips through the sea. . Continents move across the earth's surface as part of lithospheric pistes, analogous to a package being moved on a conveyor belt or a person on an malator. r3. Continental plates are subducted when they,r converge with ocean plates. 9A & C 2. The lithosphere: a. Is broken into plates b. Is composed of the crust and uppermost (lithospheric) mantle c. Moves by sliding overs zone ofpartial meltingcalied the aesthenosphere d. Is composed of silicate rocks All of the above . None of the above . The Hawaiian Islands: :1. Formed in the Pacific Plane as it slid over a hot spot in the mantle. b. Will someday lie below sea-level c. Increase in age and become smaller toward the northwest d Are part cs" a longer chain of islands and sesmmmts shaped like a dog- Iss- @ All of the above. \At occasu'ocean subduction zones: a. One ocean plate forces the other deep into the mantle. h. Hot material from the melting of the descending plate rises and forms an arc of volcanic islands in the over-ridding piste. c. Earthquakes occur below the over-riddi ng plate. fin of the shove. . as s: B. \The most important factor causing lithospheric plates to move is probably: {@Mantle convection hr Ridge push ab pull {slab suck) :1. Pilates motion 770 ...
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