Have you are burned something on the stove or in the oven? Do you know why things burn? It all has to do with temperature. Changes in matter are affected by temperature. For example, what if you place a cake in the oven and you leave it in too long? What do you think will happen? Thats right, it will probably burn. The same thing will happen if the oven setting is too high and you apply too much heat. In either case, heat has affected the rate of change in matter. Its probably obvious that when the temperature is increased a chemical change, like cooking, will occur faster. What about a physical change? Are physical changes affected by temperature? Most of us have seen steam rising off a wet road after a summer rainstorm. This happens because the road surface is very warm. The warm road and warm air temperature causes the water to evaporate quickly. The liquid water is turning into water vapor, but it is still water. The evaporation of water is a physical change. So yes, temperature affects the rate that physical change occurs.

Question: "What is causing cakes in the oven to burn and water from the road to evaporate on the hot day?"

OPTIONS:
- no
- yes

Answer: "Fall in temperature"

Response: no

Surely, you have noticed the tall poles along the roadside. Do you know what is on top of those poles? Thats right, wires that carry electric current. These wires carry electric current to your home. But what is electric current? Electric current is actually the flow of electrons. You may recall, an electron is the outer-most particle in an atom. They have a negative charge. Electricity is the continuous flow of these particles. Electrons are able to move through wires. Their speed can even be measured. The SI unit for electric current (or speed) is the ampere (A). Ampere is often shortened to amp. Electric current may flow in just one direction, or it may keep reversing direction. Direct current (DC) flows in only one direction. Direct current is what is used in devices like flashlights. Alternating current (AC) flows in two directions. This is the type of current that flows into your home through wires.

Question: "Electric current is a flow of electrons. Do electrons have a negative or positive charge?"

OPTIONS:
- no
- yes

Answer: "Yes"

Response: no

Zinni feared that Bin Laden would in the future locate himself in cities, where U.S. missiles could kill thousands of Afghans. He worried also lest Pakistani authorities not get adequate warning, think the missiles came from India, RESPONSES TO AL QAEDA'S INITIAL ASSAULTS 135 and do something that everyone would later regret. Discussing potential repercussions in the region of his military responsibility, Zinni said, "It was easy to take the shot from Washington and walk away from it. We had to live there." Zinni's distinct preference would have been to build up counterterrorism capabilities in neighboring countries such as Uzbekistan. But he told us that he could not drum up much interest in or money for such a purpose from Washington, partly, he thought, because these countries had dictatorial governments. After the decision-in which fear of collateral damage was an important factor- not to use cruise missiles against Kandahar in December 1998, Shelton and officers in the Pentagon developed plans for using an AC-130 gunship instead of cruise missile strikes. Designed specifically for the special forces, the version of the AC-130 known as "Spooky"can fly in fast or from high altitude, undetected by radar; guided to its zone by extraordinarily complex electronics, it is capable of rapidly firing precision-guided 25, 40, and 105 mm projectiles. Because this system could target more precisely than a salvo of cruise missiles, it had a much lower risk of causing collateral damage. After giving Clarke a briefing and being encouraged to proceed, Shelton formally directed Zinni and General Peter Schoomaker, who headed the Special Operations Command, to develop plans for an AC-130 mission against Bin Laden's headquarters and infrastructure in Afghanistan. The Joint Staff prepared a decision paper for deployment of the Special Operations aircraft. Though Berger and Clarke continued to indicate interest in this option, the AC-130s were never deployed. Clarke wrote at the time that Zinni opposed their use, and John Maher, the Joint Staff 's deputy director of operations, agreed that this was Zinni's position. Zinni himself does not recall blocking the option. He told us that he understood the Special Operations Command had never thought the intelligence good enough to justify actually moving AC-130s into position. Schoomaker says, on the contrary, that he thought the AC-130 option feasible. The most likely explanation for the two generals' differing recollections is that both of them thought serious preparation for any such operations would require a long-term redeployment of Special Operations forces to the Middle East or South Asia. The AC-130s would need bases because the aircraft's unrefueled range was only a little over 2,000 miles.

Question: "What did the Pentagon developed plans for using an AC-130 gunship entail?"

OPTIONS:
- no
- yes

Answer: "An attack on Bin Laden's headquarters and infrastructure in Pakistan"

Response: no

In short, the United States has to help defeat an ideology, not just a group of people, and we must do so under difficult circumstances. How can the United States and its friends help moderate Muslims combat the extremist ideas? Recommendation: The U.S. government must define what the message is, what it stands for. We should offer an example of moral leadership in the world, committed to treat people humanely, abide by the rule of law, and be generous and caring to our neighbors. America and Muslim friends can agree on respect for human dignity and opportunity. To Muslim parents, terrorists like Bin Laden have nothing to offer their children but visions of violence and death. America and its friends have a crucial advantage-we can offer these parents a vision that might give their children a better future. If we heed the views of thoughtful leaders in the Arab and Muslim world, a moderate consensus can be found. That vision of the future should stress life over death: individual educational and economic opportunity. This vision includes widespread political participation and contempt for indiscriminate violence. It includes respect for the rule of law, openness in discussing differences, and tolerance for opposing points of view. Recommendation: Where Muslim governments, even those who are friends, do not respect these principles, the United States must stand for a better future. One of the lessons of the long Cold War was that short-term gains in cooperating with the most repressive and brutal governments were too often outweighed by long-term setbacks for America's stature and interests. American foreign policy is part of the message. America's policy choices have consequences. Right or wrong, it is simply a fact that American policy regarding the Israeli-Palestinian conflict and American actions in Iraq are dominant staples of popular commentary across the Arab and Muslim world. That does not mean U.S. choices have been wrong. It means those choices must be integrated with America's message of opportunity to the Arab and Muslim world.

Question: "Which parents can be offered a vision that might give their children a better future?"

OPTIONS:
- no
- yes

Answer: "Arab parents"

Response:
no