The document contains 4 questions and answers about hydrology and depositional landforms. It discusses how depositional landforms like levees are predominantly found in the lower course of rivers where the velocity decreases, encouraging sediment deposition. It explains that levees are formed through repeated flooding that causes material to build up on river banks. Finally, it lists deltas, alluvial fans, floodplains, oxbow lakes, and point bars as other examples of depositional landforms.

1. AS GEOGRAPHY
HYDROLOGY
4 QUESTIONS
REVISION
DEPOSITIONAL
LANDFORMS

2. QUESTION 1
In which part of a river’s course are depositional landforms
predominantly found?

3. ANSWER
In the lower course, sometimes called old course, where the river
becomes lazy, loosing its velocity thus encouraging deposition (sediments
deposited).

4. QUESTION 2
What are levees?

5. ANSWER
Levees are raised river
banks. They can be
natural and artificial
(reinforced raised banks
to protect against
flooding).

6. QUESTION 3
How are levees formed by rivers?

7. ANSWER
During flood conditions, water leaves the river channel and loses
velocity (speed) as it spreads on to the surrounding area. Deposition
occurs and material builds up on the banks. Further flooding causes
this to be repeated and the levees to increase in height.

8. QUESTION 4
Name three other depositional landforms.

9. ANSWER
Deltas, alluvial fans, floodplains,
oxbow lakes, point bars.