The Renaissance

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Across
  1. 2. Sailed in 1942 to find America
  2. 4. A form of math
  3. 5. Found the position of more than 750 stars.
  4. 6. This helped lead to the Scientific Revolution.
  5. 8. Who invented the thermometer.
  6. 9. He invited four theories.
  7. 10. He was the first to find out Mars moves in an orbit.
Down
  1. 1. Used to examine stars
  2. 3. Who invented the microscope.
  3. 7. A scientific instrument that measures air pressure.