1. Electricity 4 th Grade Science

2. Electricity K-W-L KnowWant to KnowLearned

3. EQ: What part of the atom creates electricity?

4. Atom Review Parts of an atom (uncutable) –proton –neutron –electron Neutron

5. Atom Key Terms atom- the smallest unit of an element that still retains the properties of the element electron- a negatively charged particle that spins around the nucleus of an atom neutron- a neutral particle in the nucleus of an atom proton- a positively charged particle in the nucleus of an atom

6. Electricity Key Terms attract- to cause to draw near; bring together charge-an amount of electricity caused by having too few or too many electrons electricity- energy made available by the flow of an electric charge through a conductor repel- to push away static electricity- a buildup of electric charge

7. EQ: What is the scientific method?

8. Scientific Method Define the Problem/Ask a Question Research/Gather Information Form a Hypothesis Test Your Hypothesis Analyze the Data Form a Conclusion

9. Static Electricity Experiment Ask a Question Form a Hypothesis Test Hypothesis Analyze the Data Draw a Conclusion

10. EQ: What is required to make a closed circuit?

11. Circuit Key Terms battery- container consisting of one or more cells, in which chemical energy is converted into electricity and used as a source of power closed circuit- a complete path through which electricity can flow conductor- material that readily allows electric current to flow series circuit- a path that connects objects one after another, so that the current flows in a single path

13. Series Circuit Experiment Ask a Question Form a Hypothesis Test Hypothesis Analyze the Data Draw a Conclusion

14. EQ: Name 3 things that might stop the flow of electricity in a circuit.

15. Open Circuit Key Terms electric circuit- a path through which electric current can flow fuse- a safety feature in an electrical circuit that interrupts the circuit if the current goes beyond a safe level insulator- material that does not allow electric current to flow through open circuit- a circuit that is not closed, or complete, and therefore does not allow electricity to flow parallel circuit- a circuit that connects several objects so that the current for each object has its own path resistor- material that gives opposition to a flow of electric current short circuit- an accidental connection of low resistance made between points in a circuit in which electric current can flow; prevents the circuit from working as it is supposed to

16. EQ: What is a parallel circuit?

17. Parallel Circuit Demonstration Ask a Question Form a Hypothesis Test Hypothesis Analyze the Data Draw a Conclusion

18. Circuit Key Terms battery- container consisting of one or more cells, in which chemical energy is converted into electricity and used as a source of power closed circuit- a complete path through which electricity can flow conductor- material that readily allows electric current to flow series circuit- a path that connects objects one after another, so that the current flows in a single path

19. Open Circuit Key Terms electric circuit- a path through which electric current can flow fuse- a safety feature in an electrical circuit that interrupts the circuit if the current goes beyond a safe level insulator- material that does not allow electric current to flow through open circuit- a circuit that is not closed, or complete, and therefore does not allow electricity to flow parallel circuit- a circuit that connects several objects so that the current for each object has its own path resistor- material that gives opposition to a flow of electric current short circuit- an accidental connection of low resistance made between points in a circuit in which electric current can flow; prevents the circuit from working as it is supposed to

20. Bill Nye “Science Guy” Electricity! Electricity! 20 min

21. EQ: What is an electromagnet?

22. Electromagnetism Key Terms alternating current- an electric current that reverses direction at regular intervals. direct current- an electric current flowing in one direction only. electromagnet- a magnet formed by a current passed through a wire coiled around a core magnetic material; the current magnetizes the core generator- a machine the converts mechanical energy into electrical energy magnet- a piece of material (such as iron or steel) that is able to attract certain metals.

23. The Biggest Electromagnet on EarthBiggest

24. Michael Faraday (1791-1867) “Father of Electromagnetism” ” Electric Motor Faraday Cage

25. Electromagnet Experiment Ask a Question Form a Hypothesis Test Hypothesis Analyze the Data Draw a Conclusion

26. Cade Brinkley Rosman High Science Fair Winner –Elementary –Middle Latest Project: –Scale Model Tesla Coil

27. AC vs. DC Alternating Current (AC) electricity (flowing electrons) that changes direction voltage can easily be transformed (changed) travel great distances uses magnets whose poles flipped back and forth Direct Current (DC) electricity (flowing electrons) that travels in only direction voltage cannot easily be changed power station required every mile or so

28. Gets Charged!