The_____of old oceanic crust takes place at convergent boundaries. subduction cr

Question

The_____of old oceanic crust takes place at convergent boundaries. subduction creation production erosion extinction Plates move away from each other and new sea-floor is created___. across (at) subduction zones across (at) mid-ocean ridges across the stable interior of continents along (at) transform faults Oceanic crust is____than continental crust. Thicker thinner more granitic in composition less dense Most Earthquakes occur in regions near Plate boundaries Depositional Basins In northern Siberia Near Iceland Away from plate boundaries Listed from Earth's center outward, the three concentric zones of Earth are the_______. crust, mantle, core mantle, crust, core core, crust, mantle mantle, core, crust core, mantle, crust Earth's external heat engine is driven by_____. solar power (e.g. The sun) residual cosmic radiation from the Big Bang the decay of radioactive isotopes tides meteor impacts

Explanation / Answer

8) A .Subduction

Note: Subduction is a process which occurs at convergent boundaries.

9) C. across(at) mid -oceanic ridges

Note: At divergent boundaries the plates move away from each other to form mid-oceanic ridges

10) B. thinner

Note: Oceanic crust(5 kilometers to 10 kilometers) is thinner than Continental crust (35 kilometers)

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