Unit 2: Interaction

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Across
  1. 5. Negatively charged subatomic particle that moves to transfer electric charge[cite: 1, 2].
  2. 6. A material that prevents electrons from moving easily, keeping static charges trapped on its surface[cite: 2].
  3. 9. The process by which a charged object creates an opposite charge in a nearby body without direct contact[cite: 1].
  4. 10. The continuous path one celestial body takes around another due to gravitational pull[cite: 4, 5].
  5. 13. The tendency of an object to resist changes in motion due to its mass, even when weightless[cite: 4].
  6. 14. A material through which electrons and electric current can move easily[cite: 1, 2].
Down
  1. 1. The standard SI unit of force, or the scientist who formulated the Law of Universal Gravitation[cite: 4, 5].
  2. 2. The unit of electric current, equal to a flow of one Coulomb per second[cite: 1].
  3. 3. The downward gravitational force acting on an object, which changes depending on local gravity[cite: 3, 4].
  4. 4. The attractive force that acts between any two objects possessing mass.
  5. 7. Fossilized tree resin known as electron in ancient Greek, from which electricity gets its name[cite: 2].
  6. 8. A celestial body, such as Halley's, that travels in a periodic path around the Sun[cite: 4].
  7. 11. The fundamental measure of the amount of matter in an object, measured in kilograms[cite: 3, 4, 5].
  8. 12. The process where strong electric forces pull electrons off atoms to form charged particles and sparks[cite: 1].
  9. 15. The standard unit of measurement for electric charge[cite: 1].