Earth Spheres

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Across
  1. 2. Means 'water' in science-speak
  2. 5. Means 'rock' in science-speak
  3. 6. The Earth is shaped like a __________
  4. 8. The gases in the air around the Earth
  5. 9. The rocks in the Earth's crust and mantle, but not its core
Down
  1. 1. All the water on the Earth
  2. 3. All the living things on Earth
  3. 4. Means 'life' in science-speak
  4. 7. Means 'air' in science-speak