Electric charge is a physical property. It occurs between particles or objects. It causes them to attract or repel each other. They do not even have to touch. This is unlike the typical push or pull you may be familiar with. All electric charge is based on the protons and electrons in atoms. A proton has a positive electric charge. An electron has a negative electric charge. Forces on Charged Objects Most atoms are balanced electrically. They have the same number of positive and negative charges. Therefore, the number of protons equals the number of electrons. Neutrons do not matter as they have no charge. When an object loses some electrons, it becomes positively charged. There are now more protons than electrons inside the atom. The lost electrons may remain free. Or, they may attach to another object. The new object now has more electrons than protons. It then becomes negatively charged.

Question: "What physical property occurs between particles and objects?"

OPTIONS:
- no
- yes

Answer: "Neutrons"

Response: no

The idea that Earth is a magnet is far from new. It was first proposed in 1600 by a British physician named William Gilbert. Knowing it acts like a magnet is one thing. Knowing why it acts like a magnet is more difficult. In fact, finding out why is a fairly recent discovery. To find out why required new technology. It was the seismograph that made it possible to learn why the Earth acted like a magnet. Seismograph are used to study earthquakes. By studying earthquake waves they were able to learn about Earths interior. They discovered that Earth has an inner and outer core. The outer core consists of liquid metals, mainly iron and nickel. Scientists think that Earths magnetic field is generated here. It is caused by the motion of this liquid metal. The liquid metal moves as Earth spins on its axis.

Question: "When the Earth spins, what are the main liquid metals it is causing to move?"

Response: "Iron and nikel"
OPTIONS:
- no
- yes

A: yes

Problem: At 8:38, Ong told Gonzalez that the plane was flying erratically again. Around this time Sweeney told Woodward that the hijackers were Middle Easterners, naming three of their seat numbers. One spoke very little English and one spoke excellent English. The hijackers had gained entry to the cockpit, and she did not know how. The aircraft was in a rapid descent. At 8:41, Sweeney told Woodward that passengers in coach were under the impression that there was a routine medical emergency in first class. Other flight attendants were busy at duties such as getting medical supplies while Ong and Sweeney were reporting the events. At 8:41, in American's operations center, a colleague told Marquis that the air traffic controllers declared Flight 11 a hijacking and "think he's [American 11] headed toward Kennedy [airport in New York City]. They're moving everybody out of the way. They seem to have him on a primary radar. They seem to think that he is descending." At 8:44, Gonzalez reported losing phone contact with Ong. About this same time Sweeney reported to Woodward, "Something is wrong. We are in a rapid descent . we are all over the place." Woodward asked Sweeney to look out the window to see if she could determine where they were.

Question: "When did Sweeney report to Woodward, "Something is wrong""

Answer: "When the hijackers gained entry to the cockpit"

OPTIONS:
- no
- yes
Answer: no

Question:
In her storage room-turned-office, Jennifer Baum works under an expanding leak that is causing the ceiling to turn brown and crumble. Mold grows in the buckets positioned to catch the water. She shrugs it off. Outside her office she has taped up a clear plastic suit, and a sign that reads, "All employees must don protective gear before coming in." Such is life in limbo. Nearly a year after Sept. 11, the Legal Aid Society-the lawyers for New York's poor and homeless-remains, well, homeless. The nonprofit has been barred from returning to its 90 Church St. headquarters, across from the World Trade Center site, because of environmental concerns. Legal Aid has uncomfortable company. More than 11,500 New Yorkers continue to work out of temporary space, according to analysis by Manhattan-based real estate brokerage TenantWise.com Inc. and Crain's New York Business. That's 8% of the 137,000 workers who lost their offices or access to them when the Twin Towers collapsed. Legal Aid's 450 displaced attorneys and staffers have spent the past 12 months spread among previously unused spaces-some unused for good reason-in the nonprofit's other offices. It could be another year and a half before they return to their old desks. They have contended with difficult working conditions as demand for Legal Aid's services is on the rise because of Sept. 11 and the deteriorating economy. The civil division is spread among a few boroughs. Their papers and documents, some 20,000 boxes worth, are stuck in a storage facility in Linden, N.J. "I am counting the days till we can have all the parts back in one place," says Steven Banks, Legal Aid's associate attorney in chief. In the memories of the exiled workers, the old office has achieved mythical proportions. They say the wood paneling and rugs had the ability to cool emotions and lift spirits. The Legal Aid office on Montague Street in Brooklyn Heights, where 65 displaced workers have cobbled together space amid the faded and scratched walls, looks more like a bargain basement. After reading the above, is "Crain's New York Business" the correct answer to the question "Which organization has been barred from returning to its 90 Church St. headquarters, across from the World Trade Center site, because of environmental concerns?"? OPTIONS:
- no
- yes

Answer:
yes

The second major point on which the principals had agreed on March 10 was the need to crack down on terrorist organizations and curtail their fund-raising. The embassy bombings of 1998 had focused attention on al Qaeda's finances. One result had been the creation of an NSC-led interagency committee on terrorist financing. On its recommendation, the President had designated Bin Laden and al Qaeda as subject to sanctions under the International Emergency Economic Powers Act. This gave theTreasury Department's Office of Foreign Assets Control (OFAC) the ability to search for and freeze any Bin Laden or al Qaeda assets that reached the U.S. financial system. But since OFAC had little information to go on, few funds were frozen. In July 1999, the President applied the same designation to the Taliban for harboring Bin Laden. Here, OFAC had more success. It blocked more than $34 million in Taliban assets held in U.S. banks. Another $215 million in gold and $2 million in demand deposits, all belonging to the Afghan central bank and held by the Federal Reserve Bank of New York, were also frozen. After October 1999, when the State Department formally designated al Qaeda a "foreign terrorist organization," it became the duty of U.S. banks to block its transactions and seize its funds. Neither this designation nor UN sanctions had much additional practical effect; the sanctions were easily circumvented, and there were no multilateral mechanisms to ensure that other countries' financial systems were not used as conduits for terrorist funding. Attacking the funds of an institution, even the Taliban, was easier than finding and seizing the funds of a clandestine worldwide organization like al Qaeda. Although the CIA's Bin Laden unit had originally been inspired by the idea of studying terrorist financial links, few personnel assigned to it had any experience in financial investigations. Any terrorist-financing intelligence appeared to have been collected collaterally, as a consequence of gathering other intelligence. This attitude may have stemmed in large part from the chief of this unit, who did not believe that simply following the money from point A to point B revealed much about the terrorists' plans and intentions. As a result, the CIA placed little emphasis on terrorist financing. Nevertheless, the CIA obtained a general understanding of how al Qaeda raised money.

Question: "How much of the Taliban assets held in the U.S. were frozen in 1999?"

OPTIONS:
- no
- yes

Answer: "$2 million"

Response:
no