THE MECHANICAL UNIVERSE Video 28 – Static Electricity Name: Class: 1. Early physicists would talk in front of audiences to earn a living. In doing so often the topic of static electricity was illustrated by stringing up a street urchin and doing what? 2. What startling discovery did the early Greeks make about the nature of electricity? 3. Charles Augustine Coulomb did experiments in France that described the relationship between _____________ and ______________. 4. Coulombs Law is analogous to universal gravitation, with one exception. Unlike gravitation, two charges can ___________ or _____________ with an electrostatic force. 5. It is said to understand electricity, you need to understand the basics of ____________ and to understand matter, you need to understand the fundamental principles of ___________. 6. The core of every atom is called the ____________. It is made up of what 2 particles? 7. Electrically neutral atoms have equal numbers or what particles? 8. Describe the fundamental difference between insulators and conductors, in terms of electric charge (specifically, the mobile valence electrons). 9. Describe what “grounding” means in terms of charge transfer. 10. Charging by _________________ requires 3 steps. First, polarize a conductor by bringing a charge near it. Second, ___________ the polarized conductor to provide excess charge. Finally, remove the source ____________. 11. In a Leyden Jar, 2 conductors are separated by an ____________, typically glass. Once charge is placed onto the inner jar, what holds the charge in place? 12. What happens to the yellow wig when Dr. Goldstein places it on the VanDeGraff Machine?