What is formed by water erosion and deposition. Through erosion, a river creates valleys, waterfalls, flood plains, meanders and oxbow lakes. Sediment deposited where a river flows into an ocean or lake builds up a land form called a delta.

The material moved by erosion is sediment. Deposition occurs when the agents (wind or water) of erosion lay down sediment. Deposition changes the shape of the land. Water’s movements (both on land and underground) cause weathering and erosion, which change the land’s surface features and create underground formations.

Erosion is another geological process that creates landforms. When mechanical and chemical weathering breaks up materials on the Earth’s surface, erosion can move them to new locations. When layers of eroded material pile up, it’s called deposition. This can create new landforms.

Some landforms created by erosion are platforms, arches, and sea stacks. Transported sand will eventually be deposited on beaches, spits, or barrier islands. People love the shore, so they develop these regions and then must build groins, breakwaters, and seawalls to protect them.

Erosion and deposition within a river channel cause landforms to be created:

• Potholes.
• Rapids.
• Waterfalls.
• Meanders.
• Braiding.
• Levees.
• Flood plains.
• Deltas.

Erosion is the process that wears away the river bed and banks. Erosion also breaks up the rocks that are carried by the river. Air becomes trapped in the cracks of the river bank and bed, and causes the rock to break apart.

A river is a course of water that flows to another water source such as an ocean, lake or even another river. A river is not exactly a landform but part of other landforms such as mountains, prairies and valleys.

four major types

Remember to include river erosion processes keywords from last lesson in your explanation!

• UPPER COURSE. V-shaped Valleys, Interlocking Spurs, Gorges & Waterfalls
• MIDDLE COURSE. Meanders & Oxbow lakes.
• LOWER COURSE. Floodplains & Deltas

Answer. Erosional landforms occur where ice developed and moved from, while depositional landforms are found where ice flows to.

Water moving across the earth in streams and rivers pushes along soil and breaks down pieces of rock in a process called erosion. The moving water carries away rock and soil from some areas and deposits them in other areas, creating new landforms or changing the course of a stream or river.

The ice works just as a wedge works to split wood apart. Mountain peaks are most affected by frost wedging.

Liquid water