PLATE TECTONICS

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PLATE TECTONICS

  1. 1. Convergent Boundaries are plates coming together. Thereare three different types of Convergent Boundaries. Ocean-Ocean forms arcs of islands and strato volcanoes. Ocean-Continent forms volcanoes and mountain ranges. Continent-Continent forms huge mountain ranges like the Himalayas inNepal.
  2. 2. Divergent Boundaries are plates pullingapart. When Plates diverge, the Earth’scrust splits apart causing magma to risefrom the mantle, depending if it happens atsea or land, it forms mid-ocean ridges or riftvalleys.
  3. 3. Transform Boundaries are plates sliding pasteach other. This boundary releases a causeof a violent earthquake. The main types ofwaves are, P waves, waves that go backand forth. S waves, waves that go up anddown and L waves, waves that go in alldirections and the most dangerous.
  4. 4. A subduction zone is when one plate goesunder another. An oceanic plate goesdown because is more dense (heavier) andthe continental plate goes up because islighter. This happens because offaults, causing the formation of trenchesand volcanoes.
  5. 5. An Earthquake is formed by Transform plateboundary. The earthquake’s first movementhappens in the focus and the epicenter isthe point on Earth’s surface above thefocus and plates move. Earthquakeshappen on land. Thrust/Reverse Faultcauses an upward wave or a Tsunami. Atsunami is an underwater earthquake,landslide, or a volcanic eruption.
  6. 6. Hot Spots are areas of volcanic activityfrom deep under the Earth’s mantle. Anexample of a hot spot is Hawaii, an islandmade up of volcanoes that are no longeractive.

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