Layers of the Earth

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Across
  1. 5. the solid part of Earth, including the soil and Earth's rocky center
  2. 7. amount of mass, or substance, in a material
  3. 10. all living organisms on Earth
  4. 11. a shape like a ball
  5. 12. rocky, outermost layer of Earth
  6. 14. thick middle layer in the solid part of Earth
  7. 15. Earth's dense, metallic center
Down
  1. 1. outer part of Earth's magnetic field
  2. 2. plastic, flowing layer within the mantle
  3. 3. frozen water on Earth
  4. 4. force of attraction between every object and every other object that exists because of mass
  5. 6. liquid water on Earth
  6. 8. specific type of metal
  7. 9. rigid layer that includes the crust and uppermost mantle
  8. 13. layer of gasses surrounding Earth