Plate Tectonic - Volcanoes (3)
Post Lab 

WRITE IN THE CORRECT ANSWERS FROM THE FOLLOWING WORDS:

volcano
magma
lava
pumice
granite
obsidian
ash
Hawaii
basalt
Mt. St. Helens
  1. ___________________ is hot, molten, or melted rock which reaches the surface of the Earth.
      
  2. Lava that is still deep inside the earth is called _________________.
      
  3. Lava erupts from a ___________________________________
      
  4. ___________________________________ is a natural volcanic glass.
      
  5. _____________________________ is a volcanic rock that is very light because it has so many little holes ("preserved" gas bubbles) in it.
      
  6. The state of _____________________________________ is a chain of volcanic islands in the Pacific Ocean.
      
  7. __________________________________ is an active volcano in Washington that erupted explosively on May 18, 1980.
      
  8. __________________________________ is an igneous rock that cooled slowly below the earth's surface. It is not produced by a volcano.
      
  9. Most of Hawaii is made of ______________________________ a fine-grained black rock.
      
  10. When Mt. St. Helens erupted, it shot tons of powdery ____________________ into the atmosphere.

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