6. In which direction does groundwater flow? 4/19/2018 A. Away from sources of p
ID: 293549 • Letter: 6
Question
6. In which direction does groundwater flow? 4/19/2018 A. Away from sources of pollution B. Spread out evenly in all directions C. Perpendicular to the contours of the water table D. Along the contours of the water table 7. Which soil type has the highest permeability? A. Bedrock B. Sandy loam C. Sand D. Clay 8. Resistivity surveying of a landfill A. detects leaks quickly B. all answer choices are correct C. is a geophysical technique D. is effective for locating leaks 9. Yellow or red soils tend to contain A. Iron oxides B. Small grain size C. Humus D. Large grain size 10. A home septic system should be installed upon soil which is: A. Saturated B. Not permeable C. Highly permeable D. Semi-permeable 11. In the Groundwater Processes II lab we determined the flow of the water by: A. None of the answers are correct B. Drawing arrows (flow lines) to contour lines that trend towards lakes C. Drawing arrows (flow lines) at right angles to contour lines that trend downhill D. Drawing arrows (flow lines) parallel to contour lines that trend downhill 12. Springs are created when the ground surface cuts across a dry aquifer. A. True B. FalseExplanation / Answer
ANSWER 6: (C) Perpendicular to the contour of water table.
reason: All we know that water flows downhill, from areas of high elevation towards areas of lower elevation. so in contours it will flow perpendicular direction, its very obvious as two contour line have different elevation one have high and other have lower so water will follow the perpendicular direction for movement.
ANSWER 7: (C) Sand
reason : we know that Soil permeability is the property of the soil to transmit water and air. The size of the soil pores is of great importance with regard to the rate of movement of water into the soil and to the rate of percolation (movement of water through the soil). Pore size and the number of pores closely relate to soil texture and structure, and also influence soil permeability. for the sand soil textures in cm/hour is 05 and for sandy loam it is 2.5 and for others its less than 2.5 so why sand have high permeability.
answer 8: (c) is a geophysical technique, it is geophysical method that useful on landfill sites investigation.which is used to study the extent of contamination in soil and groundwater using a 2-D direct current resistivity imaging method.
answer 9 (A) red or yellow soil always indicate about iron oxide when iron oxide follow by weathering it produce soil red or yellowish color becouse when iron oxide come in contact with atmoshperic oxygen it impart red or yellowish colour.
answer 10: (c) highly permiable becouse waste water needs to flow through the drain field prior to reaching the actual septic tank and for drain highly permiable soil is very ideal.
ANSWER 11 : for this question i dont know what you studied in lab but always the Lines which are drawn perpendicular to water-table contours usually show the direction of ground-water movement along the upper surface of the ground-water system.
answer 12: false............becouse a spring is the result of an aquifer being filled to the point that the water overflows onto the land surface.
NOTE : I HOPE ANSWER WILL HELP YOU AND IF FEEL ANY DOUBT THEN ASK IN COMMENT SECTION. THANKS YOU
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