It describes the breaking down or dissolving of rocks and minerals on the surface of the Earth.

it is a types of weathering where the rocks breakdown without a change of its composition.

It is the geological process in which earthen materials are worn away and transported by natural forces such as wind or water.

It is the most important force or agent of erosion.

It is a driving force and it gives water, the energy to erode and carry away rock materials.

it is the movement of rock and soil down slope under the influence of gravity.

it is a very slow mass movement that goes on for years or even centuries.

It is a downslope viscous flow of fine-grained materials that have been saturated with water and moves under the pull of gravity.

It is a form of mass wasting involving "very rapid to extremely rapid surging flow" of debris that has become partially or fully liquefied by the addition of significant amounts of water to the source material.

is defined as the movement of a mass of rock, debris, or earth down a slope.

It is a type of volcanic eruption where lava flows from the vent in a relatively gentle, low level eruption

it is a type of volcanic eruption with relatively mild blasts, having a volcanic explosivity index of about 1 to 3m.

it is a type of volcanic eruption characterized by a dense cloud of ash-laden gas exploding from the crater and rising high above the peak.

The largest and most violent of all the types of volcanic eruptions. They are caused by the fragmentation of gassy magma, and are usually associated with very viscous magmas (dacite and rhyolite).

The simplest type of volcano and they are built from particles and blobs of congealed lava ejected from a single vent.

A typically deep-sided, symmetrical cones of large dimension built of alternating layers of lava flows, volcanic ash, cinders, blocks, and bombs.

A broad domed volcano with gently sloping sides, characteristic of the eruption of fluid, basaltic lava.

It is a type of landslide that has a complex movement of materials on a slope; includes rotational slump.

it is a types of landslide where the movement planes is parallel to slope.