Layers Of The Earth & How Earth Changes Powerpoint Lesson

The Earth is made up of three main layers: the crust, mantle, and core. The crust is the thin, outermost layer where we live, made of solid rock. Below the crust is the mantle, a thick layer of semi-solid rock that flows slowly and causes movements in the crust. At the center is the core, composed of a hot, dense metal with a liquid outer part and a solid inner part. Surrounding the Earth is the atmosphere, a layer of gases that protects life and influences weather. One natural process that changes the Earth’s surface is wind, which moves soil and shapes landforms. A human process like farming changes the land by clearing vegetation and altering soil. These processes shape the Earth by constantly changing its surface features and affect weather by influencing temperature, moisture, and air movement in the atmosphere.