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  1. www.phivolcs.dost.gov.ph › index › publicationsGeneral Information Products

    Hace 2 días · Publications. is a Philippine national institution dedicated to provide information on the activities of volcanoes, earthquakes, and tsunamis, as well as other specialized information and services primarily for the protection of life and property and in support of economic, productivity, and sustainable development.

  2. 28 de jun. de 2024 · What is a Volcano? A volcano is a landform (usually a mountain) where molten rock erupts through the surface of the planet. In simple terms a volcano is a mountain that opens downward to a pool of molten rock ( magma ) below the surface of the earth.

  3. Hace 3 días · The image below shows the different parts of a volcano. Definitions. Magma - Molten rock beneath Earth's surface. Parasitic Cone - A small cone-shaped volcano formed by an accumulation of volcanic debris. Sill - A flat piece of rock formed when magma hardens in a crack in a volcano.

  4. www.phivolcs.dost.gov.ph › index › volcano-hazardIntroduction to Volcanoes

    Hace 2 días · What is a volcano? A vent, hill or mountain from which molten or hot rocks with gaseous material have been ejected. Also craters, depressions, hills or mountains formed by removal of pre-existing material or by accumulation of ejected materials. Why does the Philippines have many volcanoes?

  5. Hace 3 días · Some volcanoes occur in the interiors of plates, and these have been variously attributed to internal plate deformation and to mantle plumes. Tectonic plates may include continental crust or oceanic crust, or both.

  6. Hace 5 días · A volcano is a conical hill or mountain formed by material from the mantle being forced through an opening or vent in the Earth’s crust. Volcanoes have vents or openings that provide direct access to lava and gases stored below the Earth’s surface and can release these elements into the atmosphere.

  7. Hace 2 días · Shapes of Volcanoes. How many different shapes of volcano are there? The type of magma in the earth creates four different types volcanoes: shield volcanoes; composite volcanoes; cinder cones; lava domes; Shield Volcano - flat. If the magma is runny, the gas can escape easily and there will not be an explosion.