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