Question

Why deltas are not formed on meeting two rivers

Answer 1

Answer:

i hope it help

Explanation:

Not all rivers form deltas. For a delta to form, the flow of a river must be slow and steady enough for silt to be deposited and build up

Answer 2

heyyyy mate...........

River flowing towards oceans contains slits and sand which on collision with salty sea water, electrolytes neutralise a charge on coloidal particles and result in the prepration of sand , clay etc

And thus due to huge amount of production of silt and sand results in the formation of delta.

When river enters an ocean~

Suddenly the force of the water current slows down as it enters the sea. With that slowdown, the sediment slows or stops moving, so it is just dumped at the mouth of the river. The ocean currents will start moving some of it along the coast and spread it out, but if the river is carrying much sediment it will overwhelm the ability of the ocean currents to move the sediment away.

When "dirty" water in the river (water that has clay particles suspended in it) hits the ocean it mixes with salty sea water. Those clay particles float very well in fresh water, but the salt in sea water causes them to coagulate and stick together and sink to the bottom. You can do an experiment yourself to show this: mix some dirt into sink water and stir it up. It will stay muddy. If you dissolve some salt in a cup of water and then mix the salty water with the muddy water the mud will settle out and the water will clear up.

hope it helps.........