Across
- 2. This holds the universe together.
- 4. Newton saw this fall and came up with a theory.
- 5. invented the scientific method.
- 9. this is the main source of knowledge
- 12. Europeans began to use numbers and __________.
- 13. Blaise pascal invented the ___________ machine.
- 15. He said matter is made of elements.
Down
- 1. used mathematics to support Copernicus's theory.
- 3. He dissected dead human bodies and challenged Galen's ideas.
- 6. Galileo invented the first of these.
- 7. He believed in a geocentric model: the earth was the center of the universe.
- 8. He developed the heliocentric theory: the sun is the center of the universe
- 10. _______ and Jews made advances. In the 1100's Europeans began to have more contact with them and had a new interest in science.
- 11. came up with the idea of gravity.
- 14. he created his own telescope.