Crossword

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Across
  1. 3. A famous playwright who wrote "Romeo and Juliet"
  2. 5. A scientist who studies earthquakes and other Earth processes
  3. 6. The powerhouse of the cell
  4. 7. The result when a solid changes directly into a gas
  5. 9. The largest planet in our solar system
Down
  1. 1. The study of weather and climate
  2. 2. The process by which plants make their own food using sunlight
  3. 4. A sudden release of energy in an atom's nucleus
  4. 8. Ancient Egyptian writing system using picture symbols