GEOLOGY

Detailed explanation-1: -The plates can be thought of like pieces of a cracked shell that rest on the hot, molten rock of Earth’s mantle and fit snugly against one another. The heat from radioactive processes within the planet’s interior causes the plates to move, sometimes toward and sometimes away from each other.

Detailed explanation-2: -Convection currents drive the movement of Earth’s rigid tectonic plates in the planet’s fluid molten mantle. In places where convection currents rise up towards the crust’s surface, tectonic plates move away from each other in a process known as seafloor spreading (Fig.

Detailed explanation-3: -Answer and Explanation: Tectonic plates float on the asthenosphere, which is the uppermost layer of the mantle. This layer begins about 700 km deep in the Earth where it is first hot enough to melt rock into magma.

Detailed explanation-4: -Convection currents move tectonic plates. These currents move the tectonic plates floating on the asthenosphere. the lithosphere are less dense than the material of the asthenosphere, so they float on top of it. Convection is the process in which hot material rises and cooler material sinks.