Through which of the following actions does the lithosphere move over the asthenosphere?

The correct answer is Plate Tectonics.

• Due to plate tectonics, the lithosphere move over the asthenosphere.

Key Points

• The lithosphere is the rocky outer part of the Earth.
• It is made up of the brittle crust and the top part of the upper mantle.
• The lithosphere is the coolest and most rigid part of the Earth. 
• There are two types of lithosphere:
  •   Oceanic lithosphere and continental lithosphere. Oceanic lithosphere is associated with oceanic crust and is slightly denser than continental lithosphere.

  Additional Information

• Plate Tectonics:
  • The most well-known feature associated with Earth’s lithosphere is tectonic activity. Tectonic activity describes the interaction of the huge slabs of the lithosphere called tectonic plates.
  • The lithosphere is divided into tectonic plates including the North American, Caribbean, South American, Scotia, Antarctic, Eurasian, Arabian, African, Indian, Philippine, Australian, Pacific, Juan de Fuca, Cocos, and Nazca.
  • The movement of tectonic plates is made possible by thermal energy (heat) from the mantle part of the lithosphere. Thermal energy makes the rocks of the lithosphere more elastic. 

Important Points