The Earth, home to us humans and millions of other species, has a complex and amazing structure. The planet is made up of different layers, each of which plays a specific role in sustaining life. Understanding these layers not only gives us a better understanding of earthquakes, volcanoes, and continental drift, but also familiarizes us with how our planet was formed. In this article, the internal structure of the Earth, including the crust, mantle, outer core, and inner core, is examined, and the characteristics of each part are explained in simple language for teenagers. The role of these structures in natural phenomena and their impact on human life are also explained. The article is based on reliable Persian sources and aims to increase teenagers' scientific knowledge and curiosity about the planet Earth. The reality is that the Earth, like an egg, is made up of several layers, which, from the outside to the inside, include the crust, mantle, outer core, and inner core. These layers were formed by millions of years of geological changes, and studying them can provide us with a deeper insight into the Earth's structure and its natural processes.