Outer Layers of the Earth Labeling Guide and Solution

Start by recognizing the Earth’s most external shell, which is composed of solid rock and plays a critical role in supporting life. This surface layer is thinner compared to deeper regions and is called the crust.

Next, beneath the crust lies a thick, semi-solid layer, responsible for much of the planet’s internal heat. This section is divided into two parts: the upper and lower parts of the mantle, which are characterized by varying temperatures and physical properties.

Finally, examine the core, which is divided into the outer and inner sections. The outer core is liquid, composed mostly of iron and nickel, while the inner core remains solid due to extreme pressure. Understanding these sections helps in studying the planet’s geological activity.