Rivers flowing over gentle slopes move more slowly. They move much more slowly than a mountain stream. These slow moving streams create different types of features than mountain streams. Slow moving water erodes the sides of their channels more than the bottom. Also, large curves in the stream form. These curves are called meanders. Meanders are caused by erosion and deposition. Remember, faster moving water causes erosion more quickly. Slower moving water erodes material more slowly. If water is moving slowly enough, the sediment being carried may settle out. This settling out, or dropping off, of sediment is deposition. The curves are called meanders because they slowly wander over the land. As meanders erode from side to side, they create a floodplain. This is a broad, flat area on both sides of a river. Eventually, a meander may become cut off from the rest of the river. This forms an oxbow lake.

Question: "What is the broad, flat area on both sides of a river called?"

Response: "Plateau"
OPTIONS:
- no
- yes

A: no

At 9:48, a representative from the White House shelter asked if there were any indications of another hijacked aircraft. The deputy director for operations mentioned the Delta flight and concluded that "that would be the fourth possible hijack." At 9:49, the commander of NORAD directed all air sovereignty aircraft to battle stations, fully armed. At 9:59, an Air Force lieutenant colonel working in the White House Military Office joined the conference and stated he had just talked to Deputy National Security Advisor Stephen Hadley. The White House requested (1) the implementation of continuity of government measures, (2) fighter escorts for Air Force One, and (3) a fighter combat air patrol over Washington, D.C. By 10:03, when United 93 crashed in Pennsylvania, there had been no mention of its hijacking and the FAA had not yet been added to the teleconference. The President and the Vice President The President was seated in a classroom when, at 9:05, Andrew Card whispered to him: "A second plane hit the second tower. America is under attack." The President told us his instinct was to project calm, not to have the country see an excited reaction at a moment of crisis. The press was standing behind the children; he saw their phones and pagers start to ring. The President felt he should project strength and calm until he could better understand what was happening. The President remained in the classroom for another five to seven minutes, while the children continued reading. He then returned to a holding room shortly before 9:15, where he was briefed by staff and saw television coverage. He next spoke to Vice President Cheney, Dr. Rice, New York Governor George Pataki, and FBI Director Robert Mueller. He decided to make a brief statement from the school before leaving for the airport. The Secret Service told us they were anxious to move the President to a safer location, but did not think it imperative for him to run out the door. Between 9:15 and 9:30, the staff was busy arranging a return to Washington, while the President consulted his senior advisers about his remarks. No one in the traveling party had any information during this time that other aircraft were hijacked or missing. Staff was in contact with the White House Situation Room, but as far as we could determine, no one with the President was in contact with the Pentagon.

Question: "What were some of the President's first thoughts upon hearing of the attacks?"

Response: "Tragic"
OPTIONS:
- no
- yes

A: no

These experiments in political Islam faltered during the 1990s: the Iranian revolution lost momentum, prestige, and public support, and Pakistan's rulers found that most of its population had little enthusiasm for fundamentalist Islam. Islamist revival movements gained followers across the Muslim world, but failed to secure political power except in Iran and Sudan. In Algeria, where in 1991 Islamists seemed almost certain to win power through the ballot box, the military preempted their victory, triggering a brutal civil war that continues today. Opponents of today's rulers have few, if any, ways to participate in the existing political system. They are thus a ready audience for calls to Muslims to purify their society, reject unwelcome modernization, and adhere strictly to the Sharia. Social and Economic Malaise In the 1970s and early 1980s, an unprecedented flood of wealth led the then largely unmodernized oil states to attempt to shortcut decades of development. They funded huge infrastructure projects, vastly expanded education, and created subsidized social welfare programs. These programs established a widespread feeling of entitlement without a corresponding sense of social obligations. By the late 1980s, diminishing oil revenues, the economic drain from many unprofitable development projects, and population growth made these entitlement programs unsustainable. The resulting cutbacks created enormous resentment among recipients who had come to see government largesse as their right. This resentment was further stoked by public understanding of how much oil income had gone straight into the pockets of the rulers, their friends, and their helpers. Unlike the oil states (or Afghanistan, where real economic development has barely begun), the other Arab nations and Pakistan once had seemed headed toward balanced modernization. The established commercial, financial, and industrial sectors in these states, supported by an entrepreneurial spirit and widespread understanding of free enterprise, augured well. But unprofitable heavy industry, state monopolies, and opaque bureaucracies slowly stifled growth. More importantly, these state-centered regimes placed their highest priority on preserving the elite's grip on national wealth. Unwilling to foster dynamic economies that could create jobs attractive to educated young men, the countries became economically stagnant and reliant on the safety valve of worker emigration either to the Arab oil states or to the West. Furthermore, the repression and isolation of women in many Muslim countries have not only seriously limited individual opportunity but also crippled overall economic productivity. By the 1990s, high birthrates and declining rates of infant mortality had produced a common problem throughout the Muslim world: a large, steadily increasing population of young men without any reasonable expectation of suitable or steady employment-a sure prescription for social turbulence.

Question: "Which Political Islam experiments faltered during the 1990's?"

Response: "Social and Economic Malaise"
OPTIONS:
- no
- yes

A:
no