The Earth

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Across
  1. 1. The preserved remains of ancient life found within sedimentary rock.
  2. 4. The very centre of the Earth, made of iron and nickel.
  3. 5. Element that moves in a cycle between the atmosphere, oceans and living creatures.
  4. 6. The huge, moving sections that make up the Earth's rocky outer layer.
  5. 7. Rock formed from the cooling of magma or lava, often containing crystals.
  6. 8. The thick layer of the Earth between the crust and the core.
Down
  1. 2. The gas that makes up 21% of the atmosphere, essential for respiration.
  2. 3. A type of physical weathering where water gets into cracks in rock and expands.
  3. 5. The thin, solid, outermost layer of the Earth.