What Makes Up the Earth?

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Across
  1. 3. rivers, Bodies of water that flow at the bottom of a cave.
  2. 4. The Earth's outermost layer.
  3. 9. A type of sedimentary rock that formed in the sea.
  4. 10. The planet you live on!
  5. 12. Formations that look like icicles that grow UP from the ground of a cave.
  6. 13. core, The outer layer of the core that is made up of iron and nickel.
Down
  1. 1. core, The deepest and hottest layer of our planet.
  2. 2. the remains or traces of prehistoric life such as animal bones or footprints.
  3. 5. The loose upper layer of the Earth's surface where plants grow.
  4. 6. The solid layer of rock under the loose surface (soil, clay, gravel, sand) of the Earth.
  5. 7. The rocky shell that lies between the outer core of our planet.
  6. 8. Formations that look like icicles and grow DOWN from the ceiling of a cave.
  7. 11. The layer of rock under clay.