What is true about continental crust?

The statement that continental crust is low density, old age, and thick accurately describes its characteristics. Continental crust is primarily composed of lighter, granitic rocks, which contribute to its lower overall density compared to the denser basaltic composition found in oceanic crust.

In terms of thickness, continental crust averages about 30 to 50 kilometers deep, which is significantly thicker than oceanic crust that typically ranges from 5 to 10 kilometers. This considerable thickness contributes to the continental crust's stability and its ability to support large mountain ranges.

Furthermore, continental crust is generally much older than oceanic crust, with some rocks dating back billions of years. The oceanic crust is continuously being created at mid-ocean ridges and recycled through subduction processes, making it relatively younger in comparison. Thus, the characteristics of low density, age, and thickness are key features that define continental crust.