Oceanography

Nikita Tracey Home Work Chapter 2 June 18, 2012 Oceanography 2. Cite the lines of come in Alfred Wegener used to oblige his idea of Continental drift. Why did scientists head that continents drifted? Alfred Wegener used the pas prison term reason to support Continental drift: The fit of the Continental margins across ocean basins. coordinated rock sequences and mountain ranges on different continents. Climate evidence such as nippy deposits in areas that are today close to the Equator. The distribution of organisms across continents that are separated by oceans that these organisms could non have crossed. Although the evidence in support of Continental drift seems compelling, scientists in Wegeners duration rejected the idea of continental drift because the mechanisms Wegener proposed as control continental movement seemed in like manner far-fetched to be plausible. Some scientists matte that Wegeners proposal ran contrary to the misgiving of the laws o f physics in the early(a) twentieth century. When sea floor bedcover data became for sale in the 1950s and 1960s, Wegeners ideas ab change form continental movement were combine with these data to provide a more current pose that explained crustal movement. 3. Describe Earths magnetized field, including how it has changed done time.

The Earths magnetized field resembles the magnetic field produced by a large bar magnet. amount magnets have ends that are oppositely charged. The magnet ends are usually designated by + and - or N (for north) and S (for south). This opposite sign causes magnetic objects to a lign line of latitude to the magnetic field! produced by the bar magnet. Although the Earth does not actually have a bar magnet inside, it behaves as if it did. Invisible lines of magnetic nip originating from within the Earth perish through Earth and out into space (see Figure 2-7, constitution of Earths magnetic field). The strength of the Earths magnetic field has changed through time (on the geologic time scale)....If you hope to get a overflowing essay, order it on our website: OrderCustomPaper.com

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