Deposition is the process by which sediments, soil, and rocks are added to a landform. It happens when the forces that carry these materials, like wind, water, or ice, lose energy. Here's how it works:

* Moving Water: As a river flows, it carries sediment. When the river reaches a wider, slower part, or encounters an obstacle, it loses energy and the sediment drops to the bottom, building up over time. This process is called alluvial deposition and leads to features like deltas, floodplains, and riverbeds.

* Wind: Wind carries sand, dust, and other fine particles. When the wind slows down, these particles settle to the ground, creating sand dunes, loess deposits, and other features.

* Glaciers: Glaciers, like giant bulldozers, carve out valleys and carry a massive amount of rock and sediment. As glaciers melt, the sediment is deposited, creating moraines (piles of debris), outwash plains, and glacial till (unsorted sediment).

In the context of melting ice, the process is most commonly called glacial deposition. This occurs when a glacier melts, dropping the sediment it was carrying, resulting in the landforms mentioned above.

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