GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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layer of loose soil
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layer of sand
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layer of gravel
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layer of hard clay
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solid rock
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Detailed explanation-1: -Answer: Aquifer. An aquifer is a permeable underground layer of rock, sand, and gravel saturated with groundwater.
Detailed explanation-2: -Permeable means the voids are connected so water can pass through. Porous and permeable materials include soil (if not too clay rich), sand, sandstone, limestone, fractured igneous and metamorphic rock, vesicular basalt and scoria.
Detailed explanation-3: -Clay is the most porous sediment but is the least permeable. Clay usually acts as an aquitard, impeding the flow of water. Gravel and sand are both porous and permeable, making them good aquifer materials. Gravel has the highest permeability.
Detailed explanation-4: -AQUIFER-a porous layer of sediment or rock WITH high permeability. AQUICLUDE-a layer with low permeability that impedes groundwater movement. SPRING-where the water table reaches the surface, allowing the discharge of water.
Detailed explanation-5: -PERMEABLE LAYER: A portion of the aquifer that contains porous rock materials that allow water to penetrate freely. IMPERMEABLE LAYER: A portion of an aquifer that contains rock material that does not allow water to penetrate; often forms the base of unconfined aquifers and the boundaries for confined aquifers.