Fill in the blank to correctly complete the description:

The crust is composed of two rocks. The ? area is Basalt. The ? area is mostly Granite. Basalt is much more dense than the granite. Because of this, the ? area continental crust can slide on top of the ? area oceanic crust.

|Oceanic Crust| More Dense |Continental Crust |Less Dense|

The crust is composed of two rocks. The **oceanic crust** area is Basalt. The **continental crust** area is mostly Granite. Basalt is much more dense than the granite. Because of this, the **continental crust** area can slide on top of the **oceanic crust** area.