Question

Tectonic plates float independently over the _________.

• A. Crust
• B. Mantle
• C. Inner Core
• D. Outer Core

Answer 1

The correct option is B Mantle

Tectonic plates are the rocky pieces of the Earth's crust. These pieces float on top of the melted rock of the mantle, another layer of the Earth found between the core and the crust.

Under the continents is a layer of solid rock called as the upper mantle or asthenosphere. However solid, this layer is weak and ductile enough to slowly flow under heat convection, causing the tectonic plates to flow.

So the above information shows that Tectonic plates float independently over the mantle. Thus correct option is B. Other options are not suitable.