Question

Compared to oceanic crust, continental crust on average is?

1) thicker
2) less dense
3) more enriched in silicon, potassium, and sodium
4) all of the above
5) none of the above

Answer 1

The correct response is that continental crust is thicker, less dense, and more enriched in silicon, potassium, and sodium compared to the oceanic crust; therefore, all of the above' is the right choice.

Step-by-step explanation:

Compared to oceanic crust, continental crust on average is indeed thicker, less dense, and more enriched in silicon, potassium, and sodium. The main answer to the question is all of the above.Continental crust generally consists of granitic rock, which comprises various types of igneous, metamorphic, and sedimentary rocks. The average thickness of continental crust is between 20 to 70 kilometers, substantially more than the typically 6-kilometer thick oceanic crust, which predominantly consists of basaltic rock.The composition of continental granite is lighter, leading to a less dense material that rises higher on the mantle. This variance in density and composition between continental and oceanic crusts leads to the former forming land masses and the latter forming ocean basins when submersed.In conclusion, continental crust's characteristics make it significantly different from oceanic crust, aligning with the three aspects mentioned in the question.