Question
Students of Hills School carried out a field study on river rejuvenation on a permanent river.
(i) State three causes of river rejuvenation they found out.
(ii) Name three features formed by river rejuvenation they are likely to have identified.
(iii) Identify two problems they may have encountered during the field study.
(i) State three causes of river rejuvenation they found out.
(ii) Name three features formed by river rejuvenation they are likely to have identified.
(iii) Identify two problems they may have encountered during the field study.
Answer
i)
- Change in base level
- Increase in river's discharge
- A change in rock resistance
ii)
- Knickpoints
- River terraces
- Incised meanders
- Abandoned meanders/meander cutoffs
- Rejuvenation gorges/valley within a valley
iii)
- Environmental constraints e.g. heavy rainfall during the study may cut short the fieldwork.
- Transport problem e.g. vehicle in which the students are using may break down.
- The students may face the danger of wild animals such as crocodiles.
- Inaccessibility to some areas due to thick vegetation/swamp
- Difficulty in climbing steep slopes/slippery areas.
- Change in base level
- Increase in river's discharge
- A change in rock resistance
ii)
- Knickpoints
- River terraces
- Incised meanders
- Abandoned meanders/meander cutoffs
- Rejuvenation gorges/valley within a valley
iii)
- Environmental constraints e.g. heavy rainfall during the study may cut short the fieldwork.
- Transport problem e.g. vehicle in which the students are using may break down.
- The students may face the danger of wild animals such as crocodiles.
- Inaccessibility to some areas due to thick vegetation/swamp
- Difficulty in climbing steep slopes/slippery areas.
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