Did you know that the Earth is made up of layers? The outermost layer, called the crust, is where we live. Beneath the crust is the mantle, which is made of molten rock. The core of the Earth is divided into two parts: the outer core, which is liquid iron and nickel, and the inner core, which is solid iron and nickel. The Earth's crust is thinnest beneath the oceans and thickest beneath mountain ranges. The mantle makes up about 84% of the Earth's volume and is responsible for the movement of tectonic plates. The outer core is about 2,300 kilometers thick and generates the Earth's magnetic field. The inner core is believed to be as hot as the surface of the sun, but it remains solid due to the immense pressure at the center of the Earth. Studying the Earth's layers provides geologists with valuable information about the planet's formation and how it has evolved over billions of years. By examining rock samples and seismic waves, scientists can create models to better understand the structure and composition of the Earth's interior. Next time you look at a mountain or volcano, remember that there is a whole world beneath your feet waiting to be explored!