1. OBJ: Given a lab SWBAT explain how a series circuit differs from a parallel circuit with 70% accuracy. DN: Review Lab Procedures ACT: Complete Electrical Circuits Lab write-up. HW: Complete Electrical Circuits Lab write-up and ECL Lab quiz (Q:1-14, scantron); Complete Electricity & Magnetism Activity Sheets; EM Exam, Friday Jan 30 (due to Tomorrow’s Blizzard). If 2 days no school, EM Exam, Monday, February 2.

2. Conclusion Question #4 Draw Series Circuit, 1 bulb w/ switch, battery Draw Series Circuit, 2 bulbs w/ switch, battery Draw Parallel Circuit, 2 bulbs w/ switch, battery

3. Circuit Symbols

4. REVIEW RESULTS Series circuit = one path only More bulbs added on a series circuit, bulbs dim. If one bulb goes out, they all go out Parallel Circuit = two (or more) paths Bulbs are brighter in a parallel circuit compared to a series circuit. If one bulb goes out, the other bulbs get brighter (remain on). Switch = halts or allows the flow of electrons; turns circuit on and off Switch up = open circuit = no flow of electrons Switch down = closed circuit = flow of electrons