what section heats the thick liquid found in the mantle? please help me.. thank you.

The thick liquid found in the Earth's mantle is primarily heated by the process of convection. Convection occurs due to the heat generated from the Earth's core, which is transferred to the mantle by the process of conduction.

To understand this, let's take a step-by-step approach:

1. The core of the Earth is extremely hot, with temperatures reaching over 5000 degrees Celsius. This immense heat is generated primarily through the radioactive decay of elements like uranium, thorium, and potassium.

2. The heat from the core is conducted through the solid inner core and the semi-liquid outer core, which are composed mainly of iron and nickel.

3. As the heat reaches the boundary between the outer core and the lower mantle, it starts to induce convective motion in the mantle. The heat causes the material in the mantle to become less dense, making it rise towards the surface.

4. The upward-moving material eventually reaches the upper mantle and the lithosphere, which is the rigid outermost layer of the Earth. As it cools down, it becomes denser and sinks back down towards the core, completing the convective cycle.

5. This process of convection continuously circulates heat in the mantle, ensuring that the thick liquid within it remains heated.

In summary, it is the process of convection driven by the heat from the core that primarily heats the thick liquid found in the Earth's mantle.

The section that heats the thick liquid found in the mantle is the core. The core is divided into two parts: the inner core and the outer core. The inner core is believed to be a solid, composed mainly of iron and nickel, while the outer core is a liquid layer also composed of iron and nickel. Heat is generated in the core through the process of radioactive decay and residual heat from the formation of the Earth. This heat is then transferred to the mantle, which is the layer above the core, causing the thick liquid in the mantle to circulate and create convection currents.