Because it is exposed to high temperature, but not enough to melt it.
Because the Asthenosphere is malleable, divergent boundaries and convergent boundaries are formed. The plasticity of the Asthenosphere allows the plates to move through sea floor spreading and subduction zones.
Plasticity means that there is enough movement in the asthenosphere to allow thelithospheric plates to move.
The lithosphere is the crust Moho and upper mantle. It floats on a plasticity zone called the asthenosphere.
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.
Asthenosphere
Because the Asthenosphere is malleable, divergent boundaries and convergent boundaries are formed. The plasticity of the Asthenosphere allows the plates to move through sea floor spreading and subduction zones.
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.
Plasticity means that there is enough movement in the asthenosphere to allow thelithospheric plates to move.
Plasticity means that there is enough movement in the asthenosphere to allow thelithospheric plates to move.
Plasticity means that there is enough movement in the asthenosphere to allow thelithospheric plates to move.
The asthenosphere lies beneath the lithosphere, which is where the tectonic plates lie. Because of the high temperature, the asthenosphere has the property to flow (plasticity); the tectonic plates "float" on this flow.
The asthenosphere is very hot. This layer is said to have plasticity because it is hot, soft, and can flow.
The lithosphere is the crust Moho and upper mantle. It floats on a plasticity zone called the asthenosphere.
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.
Plasticity means the ability to be shaped and molded.
Plasticity is a physical property.
Plasticity (sociology), is the capacity for positive change in response to environmental demands.