Topic: Electricity Safety & History Instructor Information Topic: Electricity Safety & History Objective: Cover electricity rules before starting activities. Test students knowledge of early electrical technology Summary: Establishing safety rules is very important and can help keep students from playing with the equipment and materials. A more light hearted topic is changed to early electrical inventions. Students are asked to guess what type of inventions were introduced prior to 1910.

Topic: Future Challenges Methodology: Discussion leading to questioning. Students provide details to basic information provided. Differentiation: Variation of questions to students Instructor Information

Electrical Safety & History

Agenda Magnets and Electromagnets Motors {Generators on Wednesday) Electric Vehicles Discussion Simple Circuits w/LED and Resistor and Power Calc Simple Circuits w/ Motor and Buzzer Parallel and Series LED Light and house Parallel and Series with Solar Cells Solar Cells Angle and Temperature

Boston Science Museum The plasma ball was presented to the students the prior day and a larger version is shown at the Boston Science Museum in the picture above.

Safety with Electricity Don’t put anything into outlets The outlets are 110 Volts and 15 Amps and can kill you. Special electrical equipment is needed to test Don’t touch bare wires Water and Electricity don’t Mix Spills can conduct electricity so don’t put drinks near electronics and don’t put electronics near water Wires can become hot so be careful when holding them

Electricity in History Attractive Force was studied in ancient times Revealed that static electricity goes to the “Ground” If person is insulated from the ground then they can store a charge This led to the study of insulators and conductors The study of lightning had a fair number of failures Later the development of batteries, light bulbs and motors would change how people live.

Earliest ‘Electricians’ Benjamin Franklin suspected that Lightning and Electricity were the same. Franklin invented the lightning rod as a way of protecting houses, ships, and people.

Early Devices