Across
- 2. the tendency to pull objects toward itself
- 4. attractive or repulsive interaction
- 6. A particle with either positive or negative electrical charge
- 7. force that pulls objects together
- 8. matter with a deficiency of electrons
Down
- 1. objects that affect one and other
- 3. size or quantity of something
- 5. Introduced the law of universal gravitation.
- 6. directional flow of an electrical charge
- 9. the tendency to push objects away from itself