Final answer:
Basaltic crust is indeed denser than granitic crust, making the statement true. Oceanic crust is made up of dense basalt, while continental crust is primarily composed of less dense granite. option A is the correct answer.
Step-by-step explanation:
The statement that basaltic crust has higher density than granitic crust is True. Oceanic crust which is primarily made from basalt, a volcanic rock, is denser compared to the continental crust that is composed mainly of granite. The denser basaltic crust forms the ocean floors and because of its high density, it sinks into the mantle creating oceanic basins, whereas the less dense granitic continental crust rises higher on the mantle.
Basaltic crust has higher density than granitic crust.
True. Basaltic crust refers to oceanic crust, which is composed mainly of basalt rock, while granitic crust refers to continental crust, which is predominantly made of granite rock. Basalt is denser than granite, with densities of about 3 g/cm³ compared to 2.8 g/cm³ for granite. This difference in density is due to the different compositions and mineralogical characteristics of the two types of rocks.
For example, basalt is rich in iron, magnesium, and calcium, which contribute to its higher density, while granite has a higher proportion of lighter elements such as aluminum and silicon.