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What does erosion do to landforms and to sediment?

Landforms that are created by erosion are called fluvial erosion landforms. As water passes across land, it carries with it sediment and other forms of natural debris. Over time, the accumulation of this sediment and debris create deposits, which eventually become landforms.

What occurs to bodies of rock when one body of rock moves relative to another?

A fault is boundary between two bodies of rock along which there has been relative motion (Figure 12.4d). As we discussed in Chapter 11, an earthquake involves the sliding of one body of rock past another.

What is weathering erosion and deposition?

Weathering – The natural process of rock and soil material being worn away. • Erosion – The process of moving rocks and soil downhill or into streams, rivers, or oceans. • Deposition – The accumulation or laying down of matter by a natural process, as in the laying down of sediments in streams or rivers.

What increases the amount of coastal deposition?

Factors leading to deposition include: waves starting to slow down and lose energy. shallow water. sheltered areas, eg bays.

What is the greatest factor in sediment deposition?

Water Flow. Whether sediment will be eroded, transported or deposited is depended on the particle size and the flow rate of the water. Water flow, also called water discharge, is the single most important element of sediment transport.

In which direction do the meanders tend to move?

The faster moving current on the outside bend has more erosive ability and the meander tends to grow in the direction of the outside bend, forming a river cliff.

Why does water flow faster on the outside of a meander?

On the outside of the meander, the surface of the water has a tendency to be slightly higher, or super-elevated, because it has gained momentum and acceleration. Here, the flow is forced down the outer bank, which results in a steeper velocity gradient and greater bed shear stresses.

Where is a river velocity the highest?

Stream velocity is greatest in midstream near the surface and is slowest along the stream bed and banks due to friction. Hydraulic radius (HR or just R) is the ratio of the cross-sectional area divided by the wetted perimeter.

Where is the slowest part of a river?

1. Toward the middle of a river, water tends to flow fastest; toward the margins of the river it tends to flow slowest. 2. In a meandering river, water will tend to flow fastest along the outside bend of a meander, and slowest on the inside bend.