Question

use the slideshow to find the difference in the mechanics (how it works) of the different plate boundaries.
name\tmechanics
divergent\tforming new crust. plates move apart (rises)
convergent\tplates collided
transform
no plate boundary
use the presentation to find the definitions for the following words:

1. lithosphere -
2. asthenosphere -
3. subduction -
4. convection -

Explanation:

1. The lithosphere is the rigid, outermost shell of the Earth, composed of the crust and the uppermost mantle.
2. The asthenosphere is the semi - fluid layer of the mantle beneath the lithosphere, allowing for the slow movement of tectonic plates.
3. Subduction is the process by which one tectonic plate is forced beneath another, often leading to volcanic activity and earthquakes.
4. Convection in the Earth's mantle is the transfer of heat through the movement of material (hot material rises, cools, and then sinks), driving plate tectonics.

Answer:

1. The rigid, outermost shell of the Earth, composed of crust and uppermost mantle.
2. The semi - fluid layer of the mantle beneath the lithosphere, enabling plate movement.
3. The process where one tectonic plate is forced under another.
4. Heat transfer in the mantle through material movement driving plate tectonics.