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Electricity Vocabulary

Electricity Vocabulary. Vocabulary Words. Vocabulary Chart. Word Definition Picture/Symbol. 1) Electricity. The flow of electrons that creates an electric current. 2) Electron. A subatomic particle with a negative charge. 3) Static Electricity.

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Electricity Vocabulary

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  1. ElectricityVocabulary

  2. Vocabulary Words

  3. Vocabulary Chart Word Definition Picture/Symbol

  4. 1) Electricity The flow of electrons that creates an electric current.

  5. 2) Electron A subatomic particle with a negative charge.

  6. 3) Static Electricity An electric charge built up on persons or objects through friction. Static = Stationary Not moving!

  7. 4) Current Electricity The flow of electricity through a cable, wire, or other conductor. DC Direct Current AC Alternating Current

  8. 5) Alternating Current (AC) An electric current that regularly reverses direction.Ex) Outlet

  9. 6) Direct Current (DC) An electrical current that flows in only one direction. Ex) Battery

  10. 7)Circuit The route in which an electrical current can flow, beginning and ending at the same point.

  11. 3 Parts of a Circuit • Energy Source Ex) Battery, Outlet, etc. • Energy Collector/Load Ex) Light bulb • Energy Pathway Ex) Wire

  12. Circuit Symbols

  13. Circuit Diagram

  14. 8) Series Circuit A circuit having one path for the electricity to flow. If one bulb goes out, the circuit is open and they all go out!

  15. 9)Parallel Circuit A circuit having MORE than one path for the electricity to flow – “branches”. If one bulb goes out, the rest can stay on w/ their own path!

  16. Series & Parallel Circuits

  17. 10) Resistance Measures how difficult it is for electricity to pass through an object. SI unit = Ohm Ω Ω

  18. Electrical Resistance Low Resistance • Easy to get through • Good Conductors (copper, gold, etc) • Large/Thick Wires High Resistance • Tough to get through • Good Insulators (glass, rubber, etc) • Small/Thin Wires

  19. 11) Conductor A material that allows electricity to flow through it easily. {Poor Insulator}

  20. 12) Insulator A material that DOES NOT allow the transfer of electricity easily. [Poor Conductor]

  21. 13) Volt (V) Measures Electrical Pressure {The Force or Push of Electricity} SI Unit = Volts

  22. 14) Amp Measures Electrical Current [The Volume of the Current] SI Unit = Ampere.

  23. Ω 15) Ohm Measures Electrical Resistance {How difficult it is for the current to pass through} SI Unit = Ohm

  24. Plumbing Pipe Analogy • Voltage/Volts (V) = Water Pressure • It determines how fast the electrons will travel through the circuit. • Current/Amps = Flow Rate • A measure of the volume of electricity that flows past a given. • Resistance/Ohms =Pipe Size • Measures the difficulty of electric flow

  25. Current Formula Current is equal to the voltage divided by the resistance. I = V/r I = Current V = Voltage r = resistance

  26. 16) Lightning An electric spark discharged in the atmosphere.

  27. 17) Open Circuit In electrons, the absence of flow through with electric current.

  28. 18) Closed Circuit An electric current providing an uninterrupted, endless path for the flow of the current.

  29. 19) Magnetism Attraction for iron associated with electric currents

  30. 20) 3 Things Needed to Create Electricity • Magnet • Conductor • Motion

  31. Electrical Analogies • Electricity flows like water • A transistor is like a switch • A capacitor is like a reservoir • A resistor is like a dam with a hole

  32. Electricity Web Sites • http://www.ndt-ed.org/EducationResources/HighSchool/Electricity/parallelcircuit.htm • http://www.woodlands-junior.kent.sch.uk/revision/Science/electricity.htm • http://www1.curriculum.edu.au/sciencepd/electricity/index.htm

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