Which of these statements is TRUE about continental crust?It is only 200 million years oldIt is not very denseIt is composed of basaltIt can be destroyed by sinking into magma

Continental crust is primarily composed of:Group of answer choicesBasaltPartly basalt, partly graniteClay and sandGranite

Which crust is composed of dense basaltic rocks, and is compact with an average thickness of 10 kilometers?Group of answer choicesBoth Oceanic and Continental crust.Oceanic crustContinental crustNone of these choices.Next

Which of the following statements is true?1 pointContinental crust is more dense than oceanic crustOceanic crust is made mostly of pumice because it is less denseContinental crust is thicker than oceanic crust

We know the Mantle is solid becauseGroup of answer choicesearthquake S-waves travel through itearthquake S-waves do not travel through itearthquake P-waves travel through itearthquake P-waves do not travel through it

When continental lithosphere converges with oceanic lithosphere, the oceanic lithosphere sinks into the mantle. This happens because the oceanic lithosphere is __________ than the continental lithosphereGroup of answer choicesiron-rich and therefore densersilicon-rich and therefore denseriron-rich and therefore less densesilicon-rich and therefore less dense