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Across
  1. 4. – Physics, natural science.
  2. 6. – Uranium, radioactive metal.
  3. 9. – Anthropology, study of humans.
  4. 11. – Chemistry, natural science.
Down
  1. 1. – Biology, life science.
  2. 2. – Linguistics, study of language.
  3. 3. – Geology, study of Earth.
  4. 5. – Gold, precious metal.
  5. 7. – Atom, basic matter unit.
  6. 8. – Molecule, bonded atoms.
  7. 10. – Gas, matter state.