1. Introductory Unit on Electricity

2. Concepts Covered b Electricity basics electricity vocabularyelectricity vocabulary sources of electricitysources of electricity b Circuits basic definitionbasic definition series and parallelseries and parallel break in the circuitbreak in the circuit

3. Concepts Covered b Power Grid basic parts of the power gridbasic parts of the power grid definition of the partsdefinition of the parts b Electricity and Solar Energy Fun electricity kit for playing with circuits (inquiry)electricity kit for playing with circuits (inquiry) solar power kits and car (how it works)solar power kits and car (how it works)

4. Electricity – Part I An Introduction

5. What is Electricity? b Electricity is generated from the motion of tiny charged atomic particles called electrons and protons! b Protons = + b Electrons = -

6. Types of Sources used to make Electricity b Thermal b Geothermal b Nuclear b Hydroelectric b Solar b Wind

7. How do we get Electricity? b Energy from one of the sources is converted by machines at the power plant to Electricity and then put onto the Electric Power Grid b Electric Power Grid Power PlantsPower Plants Transmission LinesTransmission Lines SubstationsSubstations Power LinesPower Lines TransformersTransformers Electrical Wiring and Circuit BoxElectrical Wiring and Circuit Box

8. Your Electric Vocabulary b Circuit b Transformer b Series Circuit b Parallel Circuit b Insulator b Conductor b Proton b Electron

9. Life without Electricity---!!! b How would you prepare your lunch? b How would you wash clothes? b When would you go to bed? b Think about all the luxuries the discovery of Electricity has brought us! No TelevisionNo Television No RadioNo Radio No LightsNo Lights

10. Inventors and Inventions b 1752 – Lightning Rod1879 – Light Bulb Ben FranklinThomas EdisonBen FranklinThomas Edison b 1800 – Electric Battery1888 – AC Power Count Alessandro VoltaNikola TeslaCount Alessandro VoltaNikola Tesla b 1805 – Refrigerator1910 – Flashlight Oliver EvansConrad HubertOliver EvansConrad Hubert b 1876 – Telephone1920 – Traffic Light Alexander Graham BellGarrett MorganAlexander Graham BellGarrett Morgan

11. More Inventors and Inventions b 1927 – Television1973 – Internet Philo T. FarnsworthVinton CerfPhilo T. FarnsworthVinton Cerf b 1945 – Computer1991 - WWW Mauchley and PresperTim Berners-LeeMauchley and PresperTim Berners-Lee b 1954 – Microwave 1955 – TV Remote Percy Spencer Eugene PolleyPercy Spencer Eugene Polley

12. Always play it safe! b Safety rules 1 – Never climb trees near power lines1 – Never climb trees near power lines 2 – Never go around downed power lines or substations2 – Never go around downed power lines or substations 3 – Never use electrical appliances near the bathtub3 – Never use electrical appliances near the bathtub 4 – Stay away from all electrical equipment (meters, transformers, etc.)4 – Stay away from all electrical equipment (meters, transformers, etc.) 5 – Do not swim or play outside on a stormy day5 – Do not swim or play outside on a stormy day 6 – Never put fingers or other objects near electrical outlets6 – Never put fingers or other objects near electrical outlets 7 – Obey all safety signs7 – Obey all safety signs 8 – Never use appliances with cords showing bare wire8 – Never use appliances with cords showing bare wire

13. Safety in a storm! b Stay away from tall objects such as trees b Stay out of open fields or areas where YOU are the tallest thing b If your hair stands on end, crouch low to the ground with as little of your body in contact with the ground as possible