Module 4

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Across
  1. 1. plates move toward each other
  2. 5. the plates move apart
  3. 7. has steep sides and is more cone-shaped than other volcanos
  4. 8. St. Helens produces miniature to large explosives eruptions which then send quantities of ash tephra into the atmosphere
  5. 9. a pyroclastic rock that was sufficiently hot at the time of deposition to weld together
  6. 10. has frequent earthquakes, active hydrothermal, and extensive glaciers
Down
  1. 2. plates slide past each other
  2. 3. a large volcanic crater formed by one major eruption eruption leading to the collapse of the volcano
  3. 4. a dense destructive mass of very hot ash,lava fragments and gases from a volcano
  4. 6. rapid melting of snow and ice during eruptions by landslides