Question

How is a delta created

A. By sediments deposited when a glacier melts

B. by sediments deposited when a river flowing from mountains empties into an ocean

C. By sediments deposited by winds over large areas

D. By sediments deposited on either side of the river bank.

Answer 1

the answer is B
but it actually forms when a river reaches a lake or the sea the water slows down and loses the power to carry sediment . ... Some rivers drop so much sediment that waves and tides can't carry it all away

Answer 2

Delta is created by 'sediments deposited when a river flowing from mountains empties into an ocean'.

Step-by-step explanation:

• A 'river delta' is formed when the 'river flows and deposits the sediments' that it carried with itself along its course.

• This generally happens when the river is entering a large water body which has stagnant water or a 'river empties' into an ocean or a sea.

• The river at this point loses the capability to carry the sediment and therefore deposits the 'sediment' at the 'mouth of the river'.

• This sediment starts forming layers which develops in a 'triangular shaped delta'.