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  2. Five themes of geography - Wikipedia

    en.wikipedia.org/wiki/Five_themes_of_geography

    Most American geography and social studies classrooms have adopted the five themes in teaching practices, [3] as they provide "an alternative to the detrimental, but unfortunately persistent, habit of teaching geography through rote memorization". [1] They are pedagogical themes that guide how geographic content should be taught in schools. [4]

  3. Thematic map - Wikipedia

    en.wikipedia.org/wiki/Thematic_map

    A thematic map is a type of map that portrays the geographic pattern of a particular subject matter (theme) in a geographic area. This usually involves the use of map symbols to visualize selected properties of geographic features that are not naturally visible, such as temperature, language, or population. [ 1 ]

  4. Mount Ragang - Wikipedia

    en.wikipedia.org/wiki/Mount_Ragang

    Mount Ragang, also called Mount Piapayungan and Blue Mountain by the local people, is an active stratovolcano on Mindanao island in the Philippines.With an elevation of 2,815 metres (9,236 ft), it is the seventh highest mountain in the Philippines and the highest point in the Lanao del Sur province.

  5. Magma chamber - Wikipedia

    en.wikipedia.org/wiki/Magma_chamber

    The location of magma chambers can be mapped using seismology: seismic waves from earthquakes move more slowly through liquid rock than solid, allowing measurements to pinpoint the regions of slow movement which identify magma chambers. [13] As a volcano erupts, surrounding rock will collapse into the emptying chamber.

  6. Volcanism - Wikipedia

    en.wikipedia.org/wiki/Volcanism

    There are only two planets in the solar system where volcanoes can be easily seen due to their high activity, Earth and Io. [34] Its lavas are the hottest known anywhere in the Solar System, with temperatures exceeding 1,800 K (1,500 °C). In February 2001, the largest recorded volcanic eruptions in the Solar System occurred on Io. [35]

  7. Crater Highlands - Wikipedia

    en.wikipedia.org/wiki/Crater_Highlands

    Topographical map of the Crater Highlands, looking from the north to the southwest. The Crater Highlands or Ngorongoro Volcanic Highlands (Milima kasoko ya Ngorongoro , in Swahili) are a geological region along the East African Rift in the Arusha Region and parts of northern Manyara Region in north Tanzania.

  8. Volcanic arc - Wikipedia

    en.wikipedia.org/wiki/Volcanic_arc

    [3]: 33 The volcanic arc forms on the overriding plate over the point where the subducting plate reaches a depth of roughly 120 kilometres (75 mi) [4] and is a zone of volcanic activity between 50 and 200 kilometers (31 and 124 mi) in width. [5] The shape of a volcanic arc is typically convex towards the subducting plate.

  9. Geology of Guam - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Guam

    Geologic map of Guam. The geology of Guam formed as a result of mafic, felsic and intermediate composition volcanic rocks erupting below the ocean, building up the base of the island in the Eocene, between 33.9 and 56 million years ago. The island emerged above the water in the Eocene, although the volcanic crater collapsed.