Soil: Problems and Management (AQA A-Level Geography): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Approximately how many tonnes of topsoil are lost globally each year through erosion and deforestation?
Approximately how many tonnes of topsoil are lost globally each year through erosion and deforestation?
36 billion tonnes
What makes sheet erosion particularly problematic for farmers?
What makes sheet erosion particularly problematic for farmers?
Removes soil evenly, less obvious damage
Which wind erosion process is the primary method of soil transportation?
Which wind erosion process is the primary method of soil transportation?
Saltation of medium particles
If windbreak trees are 5 metres tall, what width of cropland receives protection?
If windbreak trees are 5 metres tall, what width of cropland receives protection?
60 metres
Why is water erosion considered more serious than wind erosion?
Why is water erosion considered more serious than wind erosion?
Can remove larger quantities more rapidly
What conditions does waterlogging create in soil?
What conditions does waterlogging create in soil?
Anaerobic conditions
How does salinisation primarily affect plants in irrigated soils?
How does salinisation primarily affect plants in irrigated soils?
Decreases osmotic potential of water
What percentage of global arable land is affected by salinisation?
What percentage of global arable land is affected by salinisation?
10 per cent
Which soil structure type allows water to circulate most easily?
Which soil structure type allows water to circulate most easily?
Granular and crumb structures
What percentage of plant cover provides adequate protection against wind erosion?
What percentage of plant cover provides adequate protection against wind erosion?
50 per cent