Earth Rocks

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Across
  1. 3. Biggest volcano in Washington State
  2. 5. remains or impressions of a prehistoric organism
  3. 7. Wood Washington's state gemstone
  4. 9. formed in volcanic rocks and is made up of chalcedony and quartz most common in Washington State
  5. 11. Extinct volcano in Washington state erupted 250 million years ago
Down
  1. 1. Scientist who studies rocks
  2. 2. mountain which lava, rock fragments, vapor, or gas have erupted from Earth's crust
  3. 3. Scale to measure mineral hardness
  4. 4. How many volcanos are in Washington State?
  5. 6. Most common rock on earth
  6. 8. Washington's state fossil
  7. 10. Study of earth's physical nature