Oceanic and continental crusts 0.0 / 5 ? GeographyNatural hazardsGCSEAll boards Created by: katiebrosterCreated on: 02-05-16 16:57 how thick are oceanic crusts? 5-10km 1 of 11 how thick are continental crusts? 25-100km 2 of 11 are oceanic crusts dense or not? dense 3 of 11 are continental crusts denser or less dense than oceanic? less dense 4 of 11 what happens to oceanic crusts when it meets continental crusts? sinks underneath into mantle (destructive plate boundary) 5 of 11 how old is oceanic crust? oldest - 180 million years old 6 of 11 how old is continental crust? 3-4 billion years old 7 of 11 does new oceanic form or not? yes, constantly at constructive plate boundaries 8 of 11 does new continental form or not? no 9 of 11 can oceanic be destroyed? yes, at destructive plate boundaries 10 of 11 can continental be destroyed? no 11 of 11
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