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  2. Bedford Level experiment - Wikipedia

    en.wikipedia.org/wiki/Bedford_Level_experiment

    The Old Bedford River, photographed from the bridge at Welney, Norfolk (2008); the camera is looking downstream, south-west of the bridge. The Bedford Level experiment was a series of observations carried out along a 6-mile (10 km) length of the Old Bedford River on the Bedford Level of the Cambridgeshire Fens in the United Kingdom during the 19th and early 20th centuries to deny the curvature ...

  3. Ninth grade - Wikipedia

    en.wikipedia.org/wiki/Ninth_grade

    In the social studies curriculum, there are a variety of different courses that may be offered depending on school district. For example students may take a geography class, a government class, or a world history class. [54] In the science curriculum, ninth grade students are required, in most areas, to take biology.

  4. Texas Assessment of Knowledge and Skills - Wikipedia

    en.wikipedia.org/wiki/Texas_Assessment_of...

    The official logo of the TAKS test. Mainly based on the TAAS test's logo. The Texas Assessment of Knowledge and Skills (TAKS) was the fourth Texas state standardized test previously used in grade 3-8 and grade 9-11 to assess students' attainment of reading, writing, math, science, and social studies skills required under Texas education standards. [1]

  5. Marine navigation - Wikipedia

    en.wikipedia.org/wiki/Marine_navigation

    It is an art because of the skill that the navigator must have to avoid the dangers of navigation, and it is a science because it is based on physical, mathematical, oceanographic, cartographic, astronomical, and other knowledge. Marine navigation can be surface or submarine.

  6. Navigation - Wikipedia

    en.wikipedia.org/wiki/Navigation

    In the European medieval period, navigation was considered part of the set of seven mechanical arts, none of which were used for long voyages across open ocean. Polynesian navigation is probably the earliest form of open-ocean navigation; it was based on memory and observation recorded on scientific instruments like the Marshall Islands Stick Charts of Ocean Swells.

  7. History of navigation - Wikipedia

    en.wikipedia.org/wiki/History_of_navigation

    Map of the world produced in 1689 by Gerard van Schagen.. The history of navigation, or the history of seafaring, is the art of directing vessels upon the open sea through the establishment of its position and course by means of traditional practice, geometry, astronomy, or special instruments.

  8. Portal:Islands - Wikipedia

    en.wikipedia.org/wiki/Portal:Islands

    A view of some of the Thousand Islands, photographed in 2015 from atop the 1000 Islands Tower, facing northwest.The Thousand Islands are a North American archipelago of 1,864 islands that straddles the Canada–US border in the St. Lawrence River as it emerges from the northeast corner of Lake Ontario.

  9. Pre-Columbian transoceanic contact theories - Wikipedia

    en.wikipedia.org/wiki/Pre-Columbian_transoceanic...

    Reenactment of a Viking landing in L'Anse aux Meadows. Pre-Columbian transoceanic contact theories are speculative theories which propose that visits to the Americas, interactions with the Indigenous peoples of the Americas, or both, were made by people from elsewhere prior to Christopher Columbus's first voyage to the Caribbean in 1492. [1]