Here's a breakdown:
* Lithosphere: This layer is made up of the crust (the outermost layer) and the uppermost part of the mantle. It's broken into large pieces called tectonic plates.
* Asthenosphere: This layer is located beneath the lithosphere. It's a partially molten layer where the tectonic plates float and move.
How earthquakes happen:
Earthquakes occur when these tectonic plates move and interact with each other. The movement can be caused by:
* Convergent boundaries: When two plates collide, one plate can slide beneath the other (subduction) or they can buckle and fold, creating mountains.
* Divergent boundaries: When two plates move apart, new crust is created from magma rising from the mantle.
* Transform boundaries: When two plates slide past each other horizontally, causing friction and stress that can lead to earthquakes.
So, while the asthenosphere is the layer where the movement of the plates originates, the lithosphere is the layer where the earthquake itself occurs.
