Definition

Wind

• the perceptible natural movement of the air,
• especially in the form of a current of air blowing from a 
• current of air blowing from a particular direction.

Rivers

• a large natural stream of water flowing in a channel to the sea,
• a lake, or another such stream.

Waves

• a long body of water curling into an arched form and
• breaking on the shore.

Erosion

• the process of eroding or being eroded by wind, water,
• or other natural agents.

Deposit

• a sum of money placed or kept in a bank account,
• usually to gain interest.

Creep

• move slowly and carefully, 

Soil

• the upper layer of earth in which plants grow,
• a black or dark brown material typically consisting of a mixture of organic remains, clay,
• and rock particles.

Weathering

• wear away or change the appearance or texture of (something)
• by long exposure to the air.

Compisition

• the nature of something's ingredients or constituents;
• the way in which a whole or mixture is made up.

Sinkhole

• a cavity in the ground, especially in limestone bedrock, caused by
• water erosion and providing a route for surface
• water to disappear underground

Mudslide

• a mass of mud and other earthy material that is falling or
• has fallen down a hillside or other slope.

Massmovement

sediment

• Sediment is solid material that is moved
• and deposited in a new location.

Glacier

• a slowly moving mass or river of ice formed by
• the accumulation and compaction of snow on mountains or near the poles.

Mixture

• A substance made by mixing other substances together.

Paricle

• A minute portion of matter.

Decomposed

• break down or cause to break down into component
• elements or simpler constituents.

Organic

• Of, relating to, or derived from living together.