Earth's Layers Crossword Puzzle

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Across
  1. 2. 67% of Earth's mass and the Earth's largest layer
  2. 3. Thinnest layer of the Earth.
  3. 5. A familiar way of getting to the bottom of the Earth.
  4. 6. Mostly made of iron and nickel.
  5. 8. Has 4 layers.
  6. 9. Experts in the study of technology.
  7. 10. People who dig holes for a living.
Down
  1. 1. Causes the rocks to rise and fall.
  2. 4. Created by earthquakes and other tectonic plates
  3. 7. Roughly 1400 miles thick.