QUES: 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.
Do you have any questions?
MY QUESTION: What do scientists think to be the immediate cause of how Earth's magnetic field is generated? Choose the relevant options

QUES: On his return to Nuremberg in 1495, Durer opened his own workshop (being married was a requirement for this). Over the next five years his style increasingly integrated Italian influences into underlying Northern forms. Durer's father died in 1502, and his mother died in 1513. His best works in the first years of the workshop were his woodcut prints, mostly religious, but including secular scenes such as The Men's Bath House (ca. 1496). These were larger and more finely cut than the great majority of German woodcuts hitherto, and far more complex and balanced in composition. It is now thought unlikely that Durer cut any of the woodblocks himself; this task would have been performed by a specialist craftsman. However, his training in Wolgemut's studio, which made many carved and painted altarpieces and both designed and cut woodblocks for woodcut, evidently gave him great understanding of what the technique could be made to produce, and how to work with block cutters. Durer either drew his design directly onto the woodblock itself, or glued a paper drawing to the block. Either way, his drawings were destroyed during the cutting of the block.
Do you have any questions?
MY QUESTION: Whose studio gave Durer a greater understanding of wood cuts that he might or might not have done himself.

QUES: 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.
Do you have any questions?
MY QUESTION: To whom Ong and Sweeney were reporting the events from the hijacked flight?

QUES: In India to purchase some horses , British aristocrat , Lord Esketh and his wife , Edwina , come to the town of Ranchipur at the invitation of the elderly Maharani . Their marriage is an unhappy one and Lord Esketh announces his intention to return to England and begin divorce proceedings . The spoiled , insensitive Edwina scoffs at this . She renews in Ranchipur an acquaintance with a former lover , Tom Ransome , now a dissolute alcoholic . She also meets and attempts to seduce a distinguished Hindu physician , Dr. Rama Safti , a decent man who is the elderly Maharani's personal choice to succeed her someday . Safti at first resists , but ultimately succumbs to Edwina's charms and falls hopelessly in love with her . Lord Esketh becomes aware of this , but Safti saves him from a man-eating tiger during a safari . Safti admits his love for Edwina to Lord Esketh , who is now sympathetic toward this good man's plight . Ransome feels the same way , warning Edwina to stay away from Safti , a friend he admires . Edwina similarly falls into disfavor with the Maharani , who explains that Safti has been raised to lead a pure life and that Edwina is unworthy of him . Ranchipur suddenly is ravaged by a natural disaster , an earthquake and flood . Dr. Safti is so busy saving lives that he can not personally care for Edwina , who has fallen ill . Ransome looks after her as well as for young Fern Simon , who has declared her love for him . When a dam is exploded by dynamite and as a result the flood waters recede , it is Dr. Safti who reveals that Ransome is the one who risked his personal safety to save the people of Ranchipur .
Do you have any questions?
MY QUESTION:
What does Lord Esketh's wife scoff at?