user profile pic

Search

Discussions

  • Unseen

    SSC CGL MAINS

    To the developer team, you guys are doing a splendid job. Please add all ssc cgl mains papers from 2011 till date in the SSC CGL Mains tab so that aspirants like us can get benifitted. SSC CGL 2019 is near and it"s the correct time for practice. So Please add all the mains papers in the previous year papers list. 

    Thank You.

    0 Comments 5 Views
    Subrata Sur 4 days ago
    0 comments
  • Unseen

    Latest Government Jobs

    Government Jobs seekers can check out the latest govt jobs notifications 2019 with various information such as govt vacancies, eligibility, application procedure, State and Central Government Jobs and important dates with last date to apply. Check Central and State government jobs 2019 notifications for all openings in various sectors and apply for the preferred Jobs 2019 here. Govt Job seekers can make use of this page to find state and central government jobs by category, education, board, location, experience, educational qualification, age limit, etc., and on this page lists out the latest government job openings from state, central, railway, bank, PSU, SSC, UPSC, Army, Navy, Defence Jobs, etc.

    0 Comments 13 Views
    Sanjana Gandhi 2 weeks ago
    0 comments
  • Unseen

    UCEED 2020 Notification

    UCEED 2020 is conducted for the undergraduate, Bachelor of Design admissions, which is an online exam. UCEED aspirants took the mock test to assess their preparation level.

    UCEED is basically a design entrance exam expanded as 'Undergraduate Common Entrance Exam for Design', to get into Bachelors of Design (BDes) course in IITs as well as other private institutes offering design.

    UCEED syllabus comprises of Pictorial and diagrammatic questions to test; understanding of transformation and/or manipulation of 2D shapes and 3D objects and their spatial relationships; knowledge of practical and everyday mechanical and scientific concepts

    Check out UCEED Eligibility 2020

    0 Comments 18 Views
    Sanjana Gandhi 4 weeks ago
    0 comments
  • Unseen

    UGC NET December 2019 Notification

    National Testing Agency (NTA) has announced the UGC NET December 2019 Exam Dates for the posts of ‘Assistant Professor’ and for ‘Junior Research Fellowship and Assistant Professor both’. In this article, we have shared the important exam dates; online registration dates and latest exam pattern for NTA UGC NET December 2019 Exam.

    National testing Agency (NTA) has announced the UGC NET December 2019 Exam Dates alongwith Online Registration Dates, Admit Card Downloading Dates and Tentative Result Declaration Date. UGC NET December 2019 Exam will be conducted for various subjects at selected Exam Centres spread across the country. NTA conducts the UGC NET Exam every year twice to determine the eligibility ‘only for Assistant Professor’ and ‘for Junior Research Fellowship (JRF) and Assistant Professor both’ in Indian Universities and Colleges.

    Check out UGC NET Application Form 2019

     

    0 Comments 21 Views
    Sanjana Gandhi 1 month ago
    0 comments
  • Unseen

    SSC SELECTION POSTS PHASE VII

    sir,please provide free mock tests for SSC SELECTION POSTS PHASE VII FOR MATRICULATION LEVEL, we are eagerly waiting for that.

    1 Comment 22 Views
    Kotireddy 1 month ago
    1 comment

    MANDALA NARESH 4 weeks ago

    RRB NTPC MODEL PAPER SEND ME

    - Reply (0)
  • Unseen

    CONTINENTAL DRIFT

    Continental Drift, the theory that continents move slowly about the earth’s surface, changing their positions relative to one another and to the poles of the earth. In the past the theory has been discussed but not generally accepted, most geologists believing the continents to be fixed in place and subject only to vertical movements, such as those observed during mountain uplift. In recent years, however, a sound body of evidence in support of a modified form of the drift theory has been found. Ideas are becoming precise and unified, with emphasis on a moving, evolving ocean floor. The new theory is called plate tectonics.
    Ever since maps of the Atlantic Ocean were first published, scholars have pondered the remarkable jigsaw fit between the ocean’s opposing coastlines.

    The precision of the match only got better as maps of the Atlantic improved and, at the beginning of the twentieth century; this jigsaw fit became one of the many lines of evidence that led the German meteorologist Alfred L. Wegner to propose the hypothesis of continental drift. According to this hypothesis, the fit of the coastlines was no coincidence. Rather, Wegner proposed that the match was so striking because the continents of Europe, Africa, and the Americas were once joined together and had subsequently broken up and moved apart over enormous distances.
    Wegner’s concept of how the Earth’s geography changed with time is dramatically illustrated by his own maps. In these, he reassembles the continents a single landmass or supercontinent during the Late (Carboniferous Period, some 300 million years ago. He call this supercontinent Pangea (or Pangaea), meaning “all lands”. Although Wegner presented his ideas in a book first published in 1915, almost half a century would pass before they gained much support. In fact, as recently as the late 1960s many introductory geology textbooks mentioned continental drift only as a curious, discredited idea. Yet today we know that continents do indeed move, a realization that has revolutionized our picture of the Earth.

    Although others had united the continents in much the same way before him, the publication of Wegner’s book sparked an international controversy that was to last a half century. At the beginning of the nineteenth century, the prevailing view among geologists was that major features of the Earth’s surface like continents and oceans were fixed and permanent, having been formed during the formation of the planet. Because it challenged established science, Wegner’s hypothesis of moving continents was met with fierce opposition from a shocked scientist community. Yet his ideas were not dismissed out of hand because Wegner was a reputable scientist and had amassed an imposing collection of facts and opinion in support of his hypothesis from a large variety of sources. Although some of his evidence was convincing, much was speculative and provoked fierce debate.

    1. The Jigsaw Fit of Continents
    It was easy for the skeptical world of science to dismiss any significance in the jigsaw fit of continents because coastlines were known to be ephemeral features of the Earth’s surface that could be changed by a single storm.

    Of Shape In Fact, the best fit between the Atlantic continents has since been shown by computer analysis of their geometry to lie, not at their coastlines, but along lines drawn halfway down their continental slopes at an ocean depth of 1000 m (500 fathoms). Unlike coastlines, which mark only the edge of the land, continental slopes mark the edge of the continents themselves and so are far more fundamental features of the Earth’s surface. But the ocean floors had not been mapped in Wegner’s day, so he had no way of knowing the shape of the continental slopes.
    However, jigsaw puzzles are not put together solely on the basis of the shape of their pieces. A jigsaw is created when an image is cut along irregular lines. So when the puzzle is correctly reassembled, not only do the shapes of the pieces fit together, but the pictures on each of the pieces come together to recreate the image. In other words, the pieces make more sense together than they do apart. Like our severed image, if the continents were fragments of what was once a much large landmass as Wegner proposed, they might be expected to share certain large-scale feature that has formed before the landmass broke up. Wegner found evidence of such features in ancient mountain belts, in major fault lines, and in certain distinctive rock formations, each of which was brought into continuity when the continents were reassembled.

    Of relief and Structure Along the Atlantic seaboard of North America and Europe, several ancient mountain ranges like those of the Appalachian, Caledonian, and Hercynian belts are abruptly truncated or cut off by coastlines. Geologists of Wegner’s day had no explanation as to why this should be so. For example, the Appalachian mountain belt of eastern North America terminates along the Atlantic coast of Newfoundland. These mountains were known to have formed in two main stages during the mid-Paleozoic (some 350 to 400 million years ago) and Late Paleozoic (some 270 to 300 million years ago), before the breakup of Wegner’s single landmass during the Early Mesozoic (some 160 to 230 million years ago). Mountains of very similar age and geology to the mid-Paleozoic stage of the Appalachian are also found in eastern Greenland, but the belt is abruptly truncated along the coast. On the other side of the Atlantic, the same is true of the ancient Caledonian mountain belt of Western Europe, which is truncated by the coastline of western Britain and Scandinavia. Rocks of identical age and geology to those of the late Paleozoic stage of the Appalachians also occurs in the Hercynian belt, an ancient mountain range abruptly cut off by the coastlines of southern Europe and northwest Africa.
    When the continents are reassembled into Wegner’s single landmass, these ancient mountain ranges are brought together to form two continuous mountain belts. Therefore, the patterns on the jigsaw pieces matched, the trend of the mid-Paleozoic Appalachians continuing into Greenland and the Caledonian Mountains of Scotland and Scandinavia, while the Late Paleozoic Mountains continued into the Herycynian belt of southern Europe. In Wegener’s view these mountain belts were once continuous, but were severed by the opening of the Atlantic Ocean.
    In addition to the continuity of mountain belts, Wegener’s reassembly of the European and North American continents also brought together major crustal fractures or faults. In 1962, for example, the eminent Canadian geophysicist, J. Tuzo Wilson, proposed that the Great Glen Fault of Scotland was a continuation of the Cabot Fault of Newfoundland. Both structures are major crustal fractures similar to the modern San Andreas Fault in California, which were active during the mid-to Late Paleozoic. The continuity and alignment of these two faults when Europe and North America are reassembled is another pattern match on Wegener’s continental jigsaw puzzle.
    In 1937, a similar argument was made for the southern Atlantic by the celebrated South African geologist, Alexander Du Toit. Here the Early Mesozoic Cape Fold Belt of South Africa, which reaches the coast at Capetown, is closely comparable in age and geology to the Sierra de la Ventana of Argentina, which extends into South America just south of Buenos Aires. When these two continents are brought together in the manner proposed by Wegener, the two mountain belts connect up to form another perfect match. Likewise, major fracture zones that reach the coast in the bite of Africa line up with similar fracture zones in eastern Brazil, and a distinctive region of 2 billion-year-old rocks in the western Sahara continues into the Sao Luis region of northeastern Brazil.


    1 Comment 21 Views
    neetu singh 1 month ago
    1 comment

    Kotireddy 1 month ago

    sir,please provide free mock tests for SSC SELECTION POSTS PHASE VII FOR MATRICULATION LEVEL i am eagerly waiting

     

    - Reply (0)
  • Unseen

    WB SET Recruitment 2019 - Apply Online

    WB SET Recruitment 2019 - West Bengal College Service Commission (WBCSC) has given an employment notification for Conducting West Bengal State Eligibility Test (WB SET) for the recruitment of Assistant Professor vacancies in Universities & Colleges of West Bengal Only.

    WB SET 2020 is conducted to recruit eligible candidates for the post of Assistant Professors & Lecturers in the Universities in the state of West Bengal. This exam is conducted across 20 different cities & in 30 various subjects. WB SET consists of MCQ types & it has 3 papers, Paper-I is common for all applicants & paper II & III consist of subjects which candidates have opted-in PG Level.

    1 Comment 18 Views
    Sanjana Gandhi 1 month ago
    1 comment

    neetu singh 1 month ago

    GEOGRAPHICAL thought (1).jpg (242.3 KB)
    - Reply (0)
  • Unseen

    WBSU Results

    West Bengal State University every year conducts the UG & PG Part 1 2 3 Exams. Students are regularly search for the WBSU Results. Check below link and get updates of WBSU Exams Schedule and Results

    WBSU Part 1 2 3 Results

    0 Comments 22 Views
    Vigneshwara 1 month ago
    0 comments
  • Unseen

    prelims

    0 Comments 23 Views
    Praveenkumar 1 month ago
    0 comments
  • Unseen

    test series

    please provide new test series for ibps po pre.

    4 Comments 28 Views
    kruti 1 month ago
    See previous comments 3 of 4 comments

    Swapnali Talegaonkar 1 month ago

    sir please provide MIDC test series.

     

    - Reply (0)

    Sim 1 month ago

    please provide monthly current affair of mayand june month

    - Reply (0)

    Malasree 1 month ago

    Sir please provide lic assistant

    - Reply (0)
Load More...
Nobody likes to be blocked, Not Even Ads !
Please disable Adblockers and refresh this page to continue using GovJobAdda.