front 1 Which of the following represent the largest volume of freshwater found on Earth? | back 1 ice sheets and glaciers |
front 2 Which of the following is a true statement about groundwater? | back 2 Water in a groundwater system is stored in subsurface pore spaces and fractures. |
front 3 In the __________, groundwater fills the pore space. | back 3 zone of saturation |
front 4 The water table __________. | back 4 surface is a subdued version of the surface topography |
front 5 A __________ is separated from the groundwater system by the unsaturated zone. | back 5 losing stream (disconnected) |
front 6 Groundwater flows from __________. | back 6 high to low pressure areas |
front 7 Which of the following is necessary to calculate hydraulic gradient? | back 7 the distance between two wells that penetrate the zone of saturation |
front 8 A perched aquifer is located directly above a(n) __________. | back 8 aquitard |
front 9 Which of the following is true regarding groundwater as you move deeper below the surface? | back 9 Groundwater moves over larger distances, over longer timescales. |
front 10 Which of the following best describes the cone of depression? | back 10 a dimple in the water table surface due to water pumped faster than an aquifer can be replenished |
front 11 To ensure a continuous supply of water, a well must do what? | back 11 penetrate well below the regional water table surface |
front 12 When water is pumped from a well, drawdown occurs. Which of the following is a true statement regarding drawdown? | back 12 Drawdown decreases with increasing distance from the well. |
front 13 The cone of depression __________ near a well. | back 13 increases the hydraulic gradient |
front 14 In which situation does the cone of depression need to be taken into account? | back 14 A well for industrial purposes is drilled proximal to a smaller, domestic well. |
front 15 An artesian system is present when groundwater __________. | back 15 under pressure rises above the aquifer level |
front 16 A __________ is located where the pressure surface is above the aquifer, but below the ground. | back 16 nonflowing artesian well |
front 17 If a well is drilled into an aquifer where the pressure surface is both above the aquifer and the ground, a __________ is formed. | back 17 flowing artesian well |
front 18 Which of the following is a requirement for an artesian system to exist? | back 18 Aquitards must be present both above and below the aquifer |
front 19 As shown by the South Dakota example, artesian systems __________. | back 19 are able to transmit water great distances from recharge to discharge areas |
front 20 What percentage of the Earth's water is in the form of groundwater? | back 20 0.62% |
front 21 Which of the following materials is most readily dissolved by water? | back 21 Calcite |
front 22 The majority of groundwater occurs as underground rivers. | back 22 False |
front 23 Which of the following has the highest permeability? | back 23 Sand |