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Friction, Conduction, Induction - ways of charging

11/10/2015

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Check out the following links to investigate the 3 ways of charging more thoroughly: 

http://www.physicsclassroom.com/class/estatics/Lesson-2/Charging-by-Friction


http://www.physicsclassroom.com/class/estatics/Lesson-2/Charging-by-Conduction


http://www.physicsclassroom.com/class/estatics/Lesson-2/Charging-by-Induction

Each section has a "test your understanding" quiz at the end - see how well you've paid attention! 



*pay special attention and watch for the terms electron affinity and conservation of charge. 


-Mrs. Urichuk
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Charging by Induction Videos

11/8/2015

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Watch the two videos below and answer the following questions: 

When you charge by induction, you bring an object with a charge (let's call it Object A) near to an object without a charge (Object B) and you try to charge Object B. 

  1. Does Object A have to touch Object B to give it a charge? 

  2. Can you charge Object B just by bringing Object A close to it, or do you need to add an extra step? What is the extra step? 

  3. Will Object B's final charge be opposite Object A's initial charge, or the same as Object A's initial charge? 

http://science.wonderhowto.com/how-to/inductively-charge-electroscope-using-vinyl-glass-and-finger-399010/

https://www.youtube.com/watch?v=HupFY_24o-4

Food for thought for after the videos:
  1. Is the speaker's electroscope the same as our electroscopes from class? How is it different? Do you think one works better than the other? 

  2. Why isn't attraction between objects a fool-proof way to determine an object's charge? 


Discrepant Event Videos:
Working on our cluster 0 skills (predicting, observing, drawing conclusions) 

https://www.youtube.com/watch?v=aySWX55-xX4
Pause at 0:57
  • What do you think will happen now that there is a smaller bubble inside of the big bubble? 
  • Will they move together?  Separately? Will they move at all?  Explain your reasoning. 
    -> The speaker mentions that this effect is the same as when an airplane is struck by lightning. The outside bubble (or the shell of the plane) acts as a Faraday Cage. 

An Example of a Faraday Cage:
https://www.youtube.com/watch?v=pjw5gbkRTaY

  • What did you see happening? 
  • Why was Adam safe inside the cage? 
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Static Electricity - Bill Nye Demo & Virtual Lab

11/3/2015

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In yesterday's class we played with the concept of charging objects using friction and seeing how they affected/behaved around an electroscope. To prepare ourselves to charge objects in real life, we started off by watching a short demo by Bill Nye, and then playing with a virtual lab to see what happens when two objects are charged using friction (rubbing two things together). 

Click on the link below to experiment with the virtual lab for yourself, using friction from the sweater to charge the balloon(s) in various ways. 

https://phet.colorado.edu/sims/html/balloons-and-static-electricity/latest/balloons-and-static-electricity_en.html_

Bill Nye's demo:
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    Teacher Comments

    Sometimes Mrs. Urichuk will post interesting stuff here. (Only sometimes!)

    Check out the GVC Science website:
    gvcscience10.weebly.com

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  • Home
  • Choir
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  • Vocal Jazz
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    • Senior Tour 2017: Winnipeg
    • Senior Tour 2016: Chicago
  • Middle Years Choir
  • Links
    • Calendar
    • Choir Blog!
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