Earth’s crust is the outermost solid layer of the planet and the thinnest among the three main layers. It forms continents and ocean floors and contains valuable natural resources that support human civilization. The crust is constantly changing due to tectonic activity.
Characteristics
- Made of rocks and minerals
- Supports landforms like mountains and plains
- Source of soil, water, and minerals
Types of Crust
- Continental crust – thicker and less dense
- Oceanic crust – thinner and denser
Examples
- Mountain ranges formed by crustal movement
- Earthquakes along fault lines
- Mining of minerals and metals
