Explain how a delta is formed

• Deltas are formed at the end of rivers (river mouth) as it flows into the sea
• Rivers carry a lot of sediment (mud)
• The river flows into a calm sea
• This slows the river down
• Which makes the river drop its sediment
• This deposited sediment builds up over years creating a delta
• The river is forced to split up
• The smaller rivers made by deltas are called distributaries
• Examples of Deltas are Nile Delta, Ganges Delta