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Why is it important to understand the mechanism of tectonic plates?

Plate tectonics explains why and where earthquakes occur. The oceans according to plate tectonics are formed by divergent boundaries. Plate tectonics changes and challenges ideas about geology. This makes Plate tectonics important to the study of geology.

What is the importance of convection currents?

In the atmosphere, as air warms it rises, allowing cooler air to flow in underneath. Along with the turning of the Earth, this movement of air creates winds. Winds, in turn, create surface waves on the ocean. Convection also plays a role in the movement of deep ocean waters and contributes to oceanic currents.

Why do convection cells occur?

In the field of fluid dynamics, a convection cell is the phenomenon that occurs when density differences exist within a body of liquid or gas. The colder, denser part of the fluid descends to settle below the warmer, less-dense fluid, and this causes the warmer fluid to rise.

In which two layers do convection currents occur?

The two layers of the Earth that are involved in forming convection currents are the mantle and the outer core. b. Convection currents in the mantle are caused by the heat coming from the core and also the mantle.

What happens when magma convection currents move in opposite directions?

Answer: During the “magma convection currents”, the plate tectonics are pulled apart from each other. This is because if the “magma convection currents” flow in opposite direction, the plates present floating on the molten magma also float apart, causing divergent plate boundaries.

Does the asthenosphere have convection currents?

Convection currents generated within the asthenosphere push magma upward through volcanic vents and spreading centres to create new crust. According to the theory of plate tectonics, the asthenosphere is the repository for older and denser parts of the lithosphere that are dragged downward in subduction zones.

What is the asthenosphere responsible for?

The asthenosphere in plate tectonic theory. The asthenosphere is now thought to play a critical role in the movement of plates across the face of Earth’s surface. Some observers have described the asthenosphere as the ‘lubricating oil’ that permits the movement of plates in the lithosphere.

Why the asthenosphere is always in motion?

Which of these best explains why the asthenosphere is always in motion? Cooling causes expansion and shifting of the fluid particles. Heat makes the semi-fluid particles sink down and then rise up on cooling. Heat makes the semi-fluid particles rise up and then come down on cooling.