Across
- 2. attracts every other particle in the universe using a gravitational force
- 3. the study of matter and energy
- 6. Sun is the center of the universe
- 7. an explanation a scientist develops based on facts
- 11. The study of the natural world began to be characterized by careful observation and the questioning of accepted beliefs
- 12. Newton's law of universal gravitation states that a
Down
- 1. earth-centered view of the universe
- 4. A testable prediction
- 5. A device built to observe distant objects by making them appear closer
- 8. belief in reason and logic as the primary source of knowledge
- 9. A series of steps to solve problems including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions.
- 10. An instrument that measures atmospheric pressure
- 13. medieval chemistry focused on changing a base metal into gold and finding an elixir for life