All About Iron!!!

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Across
  1. 2. The fourth most ________ material in the Earth's crust.
  2. 5. The iron ore came to our planet originally from ______.
  3. 7. We will run out of iron in at least 500 _____.
  4. 9. Iron _____, or corrodes very easily in damp air.
  5. 10. Iron is used to make _____, also a very important material for humankind.
Down
  1. 1. It is ____________.
  2. 3. The _______ of iron is 7.87.
  3. 4. The periodic symbol for iron is __.
  4. 6. 90% of all ______ on planet Earth made of metal are made with iron
  5. 8. ____ is a very important element in the periodic table.