History Crossword Puzzle

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Across
  1. 5. His last name is a food
  2. 6. Discovered volume of gas decreases as pressure increases
  3. 7. Connection between geometry and algebra
  4. 9. Contributed to science of anatomy of the human
  5. 10. Discovered three major laws of planetary motion
Down
  1. 1. Speculated the nature of the atom
  2. 2. Lead the way for the development of astronomical instruments.
  3. 3. Invented reflection telescope, and was hit by and apple.
  4. 4. First modern European scientist that proposed Earth and other planets revolve around the sun
  5. 8. First person to study the sky