Epoch crossword

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Across
  1. 2. A period in the Mesozoic Era.
  2. 4. An era of space exploration.
  3. 6. A cultural and artistic movement in Europe.
  4. 8. An age marked by the use of bronze tools.
  5. 9. An age marked by the widespread use of iron.
Down
  1. 1. An age characterized by electronic devices.
  2. 3. An era marked by the discovery and use of atomic energy.
  3. 4. The earliest period of human history.
  4. 5. A period of significant global glaciation.
  5. 7. A revolution that transformed manufacturing.