SCIENCE
EARTH SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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on the outside bank, when the water speeds up
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on the outside bank where the water slows down
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along the inside bank where the water speeds up
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along the inside bank where the water slows down
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Detailed explanation-1: -Particles that are too large to be suspended move along the stream bed by saltation. Rivers deposit sediments on levees, floodplains, and in deltas and alluvial fans.
Detailed explanation-2: -Larger material and the majority of deposition occurs next to the river channel. This is the result of increased friction (with the flood plain) causing the velocity of the river to slow and therefore rapidly reduce its ability to transport material.
Detailed explanation-3: -Sediment in rivers gets deposited as the river slows down. Larger, heavier particles like pebbles and sand are deposited first, whilst the lighter silt and clay only settle if the water is almost still.
Detailed explanation-4: -When the velocity of wind or water slows, eroded sediment is deposited in a new location. The sediment builds up in a process called sedimentation and creates fertile land. River deltas are made almost entirely of sediment that has eroded from the banks and bed of a river.