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Questions and Answers
What happens to the river's current as it approaches the delta formation?
What happens to the river's current as it approaches the delta formation?
- The current becomes faster due to an increase in water volume.
- The current slows down, allowing sediments to deposit. (correct)
- The current gets redirected away from the river mouth.
- The current remains constant with no changes in speed.
Which of the following factors can hinder delta formation at a coastline?
Which of the following factors can hinder delta formation at a coastline?
- A gradual incline of the sea bed near the coastline.
- A narrow continental shelf next to the coastline.
- Strong ocean currents that disperse sediment. (correct)
- Thick vegetation along the riverbanks.
What characteristic of a delta is primarily attributed to its formation?
What characteristic of a delta is primarily attributed to its formation?
- The sediments accumulate from river discharge into a standing body of water.
- The delta forms a fan-shaped landform due to sediment deposition. (correct)
- The river splits into rivulets, bypassing existing deposits.
- The delta is created due to tectonic activity.
In which scenario will a delta likely not form?
In which scenario will a delta likely not form?
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What happens to the river as it approaches a delta in a gentle gradient?
What happens to the river as it approaches a delta in a gentle gradient?
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Study Notes
Delta Formation
- Deltas form at the mouth of a river where it enters a sea.
- They are fan-shaped landforms created by deposited material.
- River currents slow down as the river reaches the sea.
- The slowed currents cause sediment to deposit at the mouth of the river.
- Over time, the deposited sediment accumulates forming a delta.
Delta Characteristics
- The river slows down at the mouth due to silt deposits and a gentle gradient.
- The river splits into smaller streams as it moves into a gentle gradient.
- The river navigates around sand deposits that hinder its flow.
Coastlines Not Suitable for Delta Formation
- A steep seabed next to the coastline can cause deposits to be washed away.
- Coastlines with a large tidal range do not allow for material accumulation.
- Strong ocean currents prevent material accumulation and delta formation.
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