National Geographic Readers: Erupt! 100 Fun Facts About Volcanoes: Criss Cross

Answer clues based on the content and vocabulary words from National Geographic Readers: Erupt! 100 Fun Facts About Volcanoes. Look for hints in the Word Bank. Print the puzzle or use on your tablet, phone, or computer.
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Check Puzzle

Across

  • 4. Violent volcanoes can shoot ___ more than 100,000 feet into the sky.
  • 5. ___ collects in underground chambers below volcanoes.
  • 7. Cinder Cone volcanoes form when exploding lava hardens into glassy ___ fragments.
  • 8. Scientists who study volcanoes are called ___.
  • 10. Volcanoes can form ___ - holes where hot water bursts out at regular intervals.

Down

  • 1. A submarine volcano can cause a ___.
  • 2. Volcanic ___ can hold lakes of lava.
  • 3. Volcanoes with ___ domes form when lava is too thick and sticky to flow very far.
  • 6. Composite volcanoes form mountains with separate ___ of lava, ash, cinders, blocks, and bombs.
  • 9. Volcanoes form dense, dark glass called ___.

Word Bank

obsidian
ash
volcanologists
magma
lava
craters
tsunami
geysers
layers
rock