Spark Observations Guide

Answer each question using observations from the video.

Link to video: https://www.youtube.com/watch?v=Gtp51eZkwoI

In this video has 3 part, but listen only part number 1 to answer all of this questions.

VOCABULARY

1. Stephen Grey demonstrated that "electric fluid" could flow through some things, which he called _____________, but not through others, which he called ________________.
2. What are two examples of conductors that were given in the video?
3. What are four examples of insulators that were given in the video?
4. In the 1740s, Musschenbroek conducted experiments attempting to _______ electric charge in a jar.
5. In 1745, news of Musschenbroek's success with his _________ _____ traveled around the world in a matter of months, perhaps faster than any previous scientific discovery.
6. What did Musschenbroek do that became the accidental key to success with his Leyden Jar?

VOCABULARY

1. Benjamin Franklin proposed an experiment in which a kite would be flown during a thunderstorm with a conductive line descending to a metal key. What did he believe this would show about lightning?
2. What did Franklin compare electricity to, in order to explain how it worked?
3. According to the capacitor demonstration shown in the video, why was the glass an important component of the Leyden Jar?
4. Henry Cavendish placed charged Leyden Jars under sand to mimic the torpedo fish. What was he trying to learn about the torpedo fish through this experiment?
5. What did a shock from a Leyden Jar do that a shock from a torpedo fish did not?
6. Why was that difference significant?

VOCABULARY

1. Cavendish defined ________ as theamountof electricity, as opposed to itsintensity.

VOCABULARY

1. Cavendish described theintensityof electric charge as ___________ ____________, which would later be designated itsVOLTAGE.
2. Cavendish proposed his mental model, differentiating theamountof electric charge from itsintensity, as an explanation for the difference between the Leyden Jar and the torpedo fish. He proposed that the Leyden Jar had ______ intensity (voltage), but ______ charge, while the torpedo fish had ______ intensity (voltage), but ______ charge.
3. The torpedo fish produced an electric shock of about how manyvolts?
4. The Leyden Jar produced an electric shock of about how manyvolts?
5. What 1759 experiment at the University of Bologna inspired Luigi Galvani (who graduated that same year with a medical degree) to investigate the relationship between electricity and nerve transmission?
6. What did Galvani call the intrinsic property (or "fluid") he believed responsible for the muscle contractions in a dead frog when its nerves were electrically stimulated?
7. Where did Galvani believe this "animal electricity" originated and how did it work?
8. What role did the muscles play in Galvani's mental model of "animal electricity"?
9. What inspired Alessandro Volta to build his "electric pile"?
10. How was Volta's pile constructed?

VOCABULARY

1. A collection of voltaic cells is called a _______________.
2. What could Volta's battery do that had never before been done before?

VOCABULARY

1. A continuous flow of electric charge, like the water flowing continuously in a stream or river, is referred to as electrical _______________.
2. In 1808, Humphry Davy used a battery of more than 800 voltaic piles to publicly demonstrate what for the very first time?