Group 4 Volcano Crossword

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Across
  1. 4. The name of the plate boundary where volcanoes form.
  2. 5. There are ____ types of magma in the world
  3. 7. A region in the Pacific Ocean that has a lot of volcanoes.
  4. 8. A bump in the mantle that can form a volcano when a tectonic plate slides over it.
  5. 9. A type of magma that is high in iron, magnesium, and calcium, but low in potassium and sodium. 1,000 to 1,200 degrees Celcius.
  6. 10. A type of magma that is high in potassium and sodium, but low in iron, magnesium, and calcium.
Down
  1. 1. A mixture of hot rock fragments and ash moving at unbelievable speeds.
  2. 2. A type of magma that has moderate amounts of most minerals. 800 to 1,000 degrees Celcius.
  3. 3. When one plate goes under another at a plate boundary.
  4. 6. There are 1,350 _______ active volcanoes in the world