Evidence of Soil Erosion in South Africa (Grade 11 NSC Matric Geography): Quizzes
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Practise the questions
10 questions from this quiz
Which regions of South Africa are most severely affected by soil erosion?
Which regions of South Africa are most severely affected by soil erosion?
The drier western regions
Where is the Klein Seekoei valley located?
Where is the Klein Seekoei valley located?
North of Graaff-Reinet, Eastern Cape
What are the two main causes of soil erosion identified in the Karoo case study?
What are the two main causes of soil erosion identified in the Karoo case study?
Excessive grazing & intensive farming
What time period did the aerial photographs analysed in the research span?
What time period did the aerial photographs analysed in the research span?
1945 to 2000
What does the term 'simulate' mean in the context of erosion experiments?
What does the term 'simulate' mean in the context of erosion experiments?
Reproduce essential features as study aid
What did 1990s aerial photos show compared to the 1940s images?
What did 1990s aerial photos show compared to the 1940s images?
Virtually bare vegetation & abandonment
During which period did Dam 1 show the highest sediment spike at approximately 290 tonnes/km²/year?
During which period did Dam 1 show the highest sediment spike at approximately 290 tonnes/km²/year?
1960-1965
What critical finding emerged from Dam 2 sediment analysis?
What critical finding emerged from Dam 2 sediment analysis?
Sediment high despite reduced sheep
What does most of the sediment material accumulating in dams consist of?
What does most of the sediment material accumulating in dams consist of?
Valuable topsoil
What happens to soil erosion after farming activities cease in severely degraded areas?
What happens to soil erosion after farming activities cease in severely degraded areas?
Erosion processes continue to operate