Exam (elaborations)
Water_Soil_Aquifers_Topography
Water_Soil_Aquifers_Topography
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Water/Soil/Aquifers/Topography75%- ✅Earth’s surface is covered in water
Horizon B-✅Subsoil- minerals, sand, silt and clay
Horizon C-✅Parent material, partially weathered bedrock
Bedrock-✅Impermeable, solid, unweathered rock
Porosity-✅Percentage or rock or sediment that consists of open spaces
Permeability-✅Ability of rock to let fluids pass through- spaces must be connected
Aquifer-✅An underground layer of water bearing permeable rock so groundwater can
be extracted
Zone of Aeration- ✅Zone where air fills the pore spaces (unsaturated)
Water Table-✅Barrier between zone of saturation and aeration
Water Table Level-✅Rises during periods of prolonged rainfall, drops during droughts
Zone of Saturation-✅Layer of an aquifer in which the pore space is completely filled
with water
✅Pumps water from zone of saturation
Wells-
Cone of Depression-✅Where the water table level sinks due to heavy groundwater
pumping
Confining Layer-✅Impermeable soil or bedrock
Unconfined Aquifer-✅Has a confining layer below, open soil above
Water Table Well-✅A well that pumps from an unconfined aquifer
Confined Aquifer-✅Has confining layers above and below
Artesian Well-✅A well that pumps from a confined aquifer
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