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Why do rivers deposit heavier sediments first and then lighter sediment?
Wiki User
∙ 13y ago
More dense material is less buoyant in water than less dense material of equal volume. Sediment shape also plays a role in deposition sequence as material with angular irregular surfaces are more likely to be carried by water flow than smooth surfaces, due to friction with the water. Finally, the size of the sediment particle, particularly of rock material, may be most critical in the sequence of deposition; larger particles are the first to overcome the power of friction encountered in moving water, via gravity.
Wiki User
∙ 13y ago
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What is the opposite of heavier?
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Why do rivers deposit heavier sediments first?
Because it requires more energy to transport heavier sediment than lighter sediment. As a river flows it loses energy, and hence begins to drop the heavier sediment. Imagine you had a handful of sand and a handfull of flower. The sand is heavier than the flower, and also larger. If you blow on both of your hands, the flower will be easily blown away, but the sand will be more difficult, because the grains are bigger and heavier, and require more energy to move.The heavier sediments are the first to overcome the power of the moving water with the power of gravity.
What word means moving rivers pick up lighter sediment and carry it along?
Erosion is the movement of sediments by wind, water, ice, and gravity. Transportation of sediments by rivers and streams is referred to as fluvial erosion.
Why is a river deposits heavier sediments first and lighter sidements later as it flows along?
After that it would be deposited when the flow of the river is too slow to carry it.
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