The Lithospheric Plates Are Believed To Be Moving Slowly. What Is The Driving Force That Facilitates This Movement?, A. Gravitational Force Of The Moo
The lithospheric plates are believed to be moving slowly. What is the driving force that facilitates this movement?
a. gravitational force of the moon
b. magnetic force at the poles
c. convection current in the mantle
d. the force of the atmosphere
Answer:
The correct answer is letter c. convection current in the mantle.
Explanation:
The driving force that facilitates the movement of the lithospheric plates to move slow is the convection current in the mantle. Convection current is the process by which less dense material rises and more dense material sinks. Mantle convection is considered as the slow movement of Earths solid silicate mantle caused by convection currents carrying heat from the interior of the Earth to the surface. Earths surface lithosphere, which rides atop the asthenosphere. The typical mantle convection speed is 20 mm/yr near the crust but can vary quite a bit and the small scale convection in the upper mantle is much faster than the convection near the core. A single shallow convection cycle takes on the order of 50 million years, though deeper convection can be closer to 200 million years. Code 10.22.1.2.
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