1312 FILMS on ELECTRICITY (24pts) Write all answers in your bound journal Make it NEAT and in COMPLETE SENTENCES, clearly identify which section you are working (using numbers) Box final answers if doing math. -4pt if you do not title and date the entry -1pt (per infraction) if you do not clearly identify the sections, or number the problems Commutator (film below questions) (6pts) Diagram the simple electromagnetic generator shown. What is the flow of electrons in the generator? When does the flow of electrons stop? What is a commutator? When was it developed? What is the flow of electrons in the generator with the commutator? Diagram it:     Energy Production (film below questions) (9pts) What is the source of all energy? What are 4 natural resources? Name the finite and infinite sources? What is the majority of electricity made from? Explain the use of steam in energy production. Why is steam efficient? What are the 4 major North American power grids? What is the purpose of a transformer? What does a substation do?     How Solar Panels Work (film below questions) (9pts) What is 10,000 x our use? What are solar cells made up of? What is the difference between N and P type layers? What strikes the solar cell? What direction is the mobile electron drawn to? Each silicon cell puts out ____V of electricity. What gets worn out in a solar cell? (Besides politics) Give three reasons that prevents us from going all solar? What is the most efficient solar cell (percentage)?