新视野 Book3 Unit10修改稿.docVIP

Book Ⅲ Unit 10 Section A The Bermuda Triangle Phenomenon Ⅰ.Warm-Up Questions: Have you ever heard of the Bermuda Triangle? Do you know its location? What have you heard about it? According to your idea, why things disappear in that area? Ⅱ.Background Information: The Bermuda Triangle is the greatest modern mystery of our supposedly well understood world: a region of the?Atlantic Ocean between Bermuda, Miami, Florida, and San Juan, Puerto Rico. Actually the Bermuda or Devil’s Triangle is an imaginary area located off the southeastern Atlantic coast of the United States, which is noted for a high incidence of unexplained losses of ships, small boats, and aircraft. Charles Berlitz is the author of the book, The Bermuda Triangle, which was published in 1974. Among the theories advanced by Berlitz the explain the number of losses in the area are: ⑴ A large magnetic vortex (磁性旋涡) through which a craft and its occupants could slip into a different point in time and space. ⑵The action of the aliens from outer space or from inside the earth. ⑶The activation of man-made power complexes on the seabed left by a previous civilization. Magnetic North is located 1,500 miles away from?the North Pole. Therefore, geographic north on the earth, the area we mentally consider absolute north, is not where the compass points. Following the N on your compass is not going to lead you to the North Pole; it will lead you to Prince of Wales Island. See illustration. The red dots indicate True North, that is, the absolute geographic north of this planet (North Pole); and Magnetic North, 1,500 miles in a southerly direction from it. The central axis (Agonic Line) of the magnetic field extends through the planet to the South Magnetic Pole at Antarctica. When off Florida, both the North Pole and the Magnetic Pole are in line. The Compass truly points to the North Pole here but only briefly. It is merely incidental because Magnetic North is directly due south of the North Pole here. Chri