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Volcano review

  •  English    14     Public
    Reviewing the reading selection 'volcano' from National Geographic's 'Inside' book
  •   Study   Slideshow
  • Explain how volcanoes are made.
    Rock is melted at the earth's center, pressure forces the lava up through cracks in the crust, and finally the volcano explodes. 
  •  25
  • How do volcanoes help farmers?
    The ash helps crops grow.
  •  10
  • Where do volcanoes form?
    Where earth's plates meet.
  •  10
  • What is a volcanologist?
    A scientist who studies volcanoes?
  •  20
  • What do we call a volcano that can erupt lava?
    An active volcano.
  •  25
  • What type of mountain does fast lava make?
    Low, wide mountains.
  •  15
  • What kind of mountain does slow lava make?
    Tall, steep mountains.
  •  10
  • What is lava?
    Hot liquid rock.
  •  10
  • What is the earth's crust?
    It's the surface of the earth.
  •  25
  • What happened 20 years after the Mount St Helens eruption?
    Trees grew back and wildlife (animals) returned.
  •  20
  • What is the ring of fire?
    It's a circle of volcanoes.
  •  20
  • Where is the ring of fire?
    In the pacific ocean.
  •  20
  • According to the book, why is it dangerous to work near a lava river?
    Because the rocks near the lava are very hot.
  •  15
  • Why weren't people ready for the Mount St Helens eruption?
    Because they didn't know that it would erupt that day.
  •  20