What is the outermost layer of the Earth called?

The outermost layer of the Earth is known as the crust. This layer is essential in various geological processes and is primarily composed of rock and soil. The crust is relatively thin compared to the other layers of the Earth, such as the mantle and the core.

The crust is where we live and contains all terrestrial life forms, geological features, and natural resources. It includes both continental and oceanic crust, with varying thicknesses; continental crust is generally thicker and older, while oceanic crust is thinner and younger.

Understanding the composition and structure of the crust is crucial in the study of geology and Earth sciences, as it plays a significant role in tectonic activities, such as earthquakes and volcanic eruptions.