Question

How does plate move?

Answer 1

Plates move over the asthenoshpere, which is part of the mantle that has the property of plasticity. Its like a semi solid. Convection affects the plates movements. Convection is the transfer of energy in a fluid (liquid or gas), in which warmer fluid rises and cooler fluid sinks in a convection current. In the asthenosphere, the mobile rock (mobile from plasticity) moves in a circular motion. Heated rock closer to the core rises to the surface, spreads and begins to cool, then sinks back down again to be reheated and rise again. 

Answer 2

Plates at our planet's surface move because of the intense heat in the Earth's core that causes molten rock in the mantle layer to move. It moves in a pattern called a convection cell that forms when warm material rises, cools, and eventually sink down