Major coastal cities such as Charleston, South Carolina, have to find a delicate balance between supplying enough water for a healthy, growing city and preventing contamination of their groundwater supplies with saltwater due to overpumping
What steps could be taken to counteract the effects of saltwater contamination without abandoning the well? Explain.
What will be an ideal response?
Answer: Reduce the amount of water taken from that well. Drill a new well further inland in a different aquifer. Inject wastewater into the subsurface to keep the saltwater below the level of the freshwater.
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Which of the following describes the shift in position of the Pacific high over the North Pacific Ocean?
A. eastward in winter and westward in summer B. westward in winter and eastward in summer C. northward in winter and southward in summer D. southward in winter and northward in summer
When a magnet is thrust into a coil of wire, the coil tends to
A) attract the magnet as it enters. B) repel the magnet as it enters. C) both A and B D) neither A nor B
What type of stream pattern would you expect to develop in a stream that had a low bedload to suspended load ratio, a higher percentage of finer grained sediment, stable banks, constant discharge and a low channel slope?
A) highly meandering pattern B) moderately meandering pattern C) mixed meandering and braided pattern D) moderately braided pattern E) highly braided pattern
What is the accepted age of the Earth?
A) 10,000 years B) 1 million years C) 4.6 million years D) 4.6 billion years