: 38. As one oes from the crust to the inner core of the Earth, the overall dens
ID: 121348 • Letter: #
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: 38. As one oes from the crust to the inner core of the Earth, the overall density of the rocks 1) increases 2) decreases 3) remains the same. 2) rainfall increases 3) many wells are dug 1) rainfall decreases 40.Caves are never found in: 1) limestone 2) gypsum 3) granite 4) halite. 41. The Zone of Saturation: 1) is full of water 2) contains air and some water 39. The water table rises if: into the area 4) there is a drought. 3) is above the Zone of Aeration 4) is located above the water table. 42. Groundwater usually flows through solid rock: 1) as large underground rivers 2) only through impermeable rock types 3) at the rate of miles per day 4) at the rate of several inches or at most several feet per day.Explanation / Answer
38. As one goes from crust to inner core of the earth, the overall density of earth increases. Because, density increases with increasing pressure. It means that with increases pressure, void spaces within materials decrease. So the density increases.
39. The water table rises if rainfall increases. Because rain penetrates below to the ground. As a result groundwater increases.
40. Caves are never found in granite. Because granite is igneous rocks which is insoluble and compact But caves are formed in soluble soft rocks.
41.The zone of saturation is full of water. It is present below the water table.
42. Groundwater usually flows through solid rocks at the rate of several inches or at most several feet per day. Generally, solid rock does not have Permeability because solid rocks are compact. But fractured solid rocks contain water. Groundwater flows slowly through solid rocks.
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