Answer :
The molten material in the mantle plays a crucial role in sea floor spreading. Here's how:
1. **Convection Currents:** The heat from the Earth's core causes convection currents in the mantle. These currents drive the movement of tectonic plates.
2. **Rising Magma:** As the mantle material heats up, it becomes less dense and rises towards the surface. When it reaches the ocean floor, it creates new crust through volcanic activity.
3. **Mid-Ocean Ridges:** The molten material solidifies at mid-ocean ridges, where new oceanic crust is formed. This process continuously pushes the existing crust apart, leading to sea floor spreading.
4. **Plate Movement:** The newly formed crust at the mid-ocean ridges pushes the older crust away, causing the sea floor to spread apart. This movement contributes to the overall process of plate tectonics.
In summary, the molten material in the mantle drives the process of sea floor spreading by creating new oceanic crust at mid-ocean ridges, which leads to the movement of tectonic plates and the reshaping of the Earth's surface over time.
