Causes of Soil Erosion (Grade 11 NSC Matric Geography): Quizzes
📚Quizzes
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10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is soil erosion?
What is soil erosion?
Soil removed faster than it can form
What problem does monoculture farming cause?
What problem does monoculture farming cause?
Removes same nutrients repeatedly
How much soil is needed to produce 1 tonne of crops?
How much soil is needed to produce 1 tonne of crops?
20 tonnes
What is the most severe stage of water erosion?
What is the most severe stage of water erosion?
Gully erosion
Which wind erosion mechanism affects the finest soil particles?
Which wind erosion mechanism affects the finest soil particles?
Suspension
Why does overgrazing cause soil erosion?
Why does overgrazing cause soil erosion?
Fewer roots hold soil together
What percentage of SA topsoil was lost in the 20th century due to water erosion?
What percentage of SA topsoil was lost in the 20th century due to water erosion?
25%
What percentage of SA has soils highly susceptible to wind erosion?
What percentage of SA has soils highly susceptible to wind erosion?
25%
What percentage of land did the Land Act of 1913 allocate to black people?
What percentage of land did the Land Act of 1913 allocate to black people?
Less than 10%
By the 1960s, what % of SA's population lived on only 13% of the land?
By the 1960s, what % of SA's population lived on only 13% of the land?
42%