Brain Teasers Crossword Challenge

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Across
  1. 3. The process of plants making food using sunlight.
  2. 5. The author of "Romeo and Juliet."
  3. 8. The capital city of Cuba.
  4. 10. The study of celestial objects and the universe.
  5. 11. The study of living organisms.
  6. 12. The science of matter and its interactions.
  7. 13. The force that pulls objects toward the center of the Earth.
  8. 14. The currency of Japan.
Down
  1. 1. The largest planet in our solar system.
  2. 2. The study of Earth's physical features, climate, and weather.
  3. 4. A shape with four equal sides.
  4. 6. The longest river in the world.
  5. 7. An instrument with black and white keys.
  6. 9. The process of converting food into energy.