The basic answer is the Mantle, but, really, it's the only very uppermost part of the Mantle that encounters plasticity and convection--when relating to tectonic plate movement, at least. The Asthenosphere is the fluid layer on with plates move across the surface of the earth, being pulled apart (Diverging) or colliding together (Converging). The Asthenosphere is what drives convection and in a very similar way, subduction. Like the person above said, if your teacher/professor hasn't said the word Asthenosphere, then the answer he/she is looking for here is the Mantle, or Upper Mantle. I'd go with Upper Mantle to be safe.
They occur in the upper mantle and the convections come from the inner core but travel to the upper mantle.
The methosphere is a layer but it is not a major layer of the earth
the outer layer of the earth
The crust is the outermost layer of the Earth.
The last layer in Earth is the inner core.
nun
To answer your question the answer is the Mantle.
Plasticity means that there is enough movement in the asthenosphere to allow thelithospheric plates to move.
The asthenosphere is very hot. This layer is said to have plasticity because it is hot, soft, and can flow.
They occur in the upper mantle and the convections come from the inner core but travel to the upper mantle.
It is the second layer of the earth... That i am trying to figure out what it is composed o help me...
solid atoms can not flow they can only slowly vibrate.
While still solid, the asthenosphere is able to flow. The ability of a solid to flow is called plasticity. See "What's the matter?" for an activity to demonstrate plasticity. Since the asthenosphere is more liquid than the rest of the mantle, the broken lithosphere plates are able to "float" on it.
The methosphere is a layer but it is not a major layer of the earth
Yes, it is the hottest layer of the Earth!!
The layer of gas surrounding earth is the atmosphere.
The crustis the Earth's outer layer.