Electrostatics
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Electrostatics. Section 1: The Atom and Charging. Subatomic Particle Charges e: p: n:. Conductors: Demos: F ind materials in the room that are conductors Line up washer and charge with high voltage Charge distilled water, city water and G adorate Pass charge through bike tire.

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Section 1 the atom and charging
Section 1: The Atom and Charging

Subatomic Particle Charges

e:

p:

n:


Conductors:

Demos:

Find materials in the room that are conductors

Line up washer and charge with high voltage

Charge distilled water, city water and Gadorate

Pass charge through bike tire

Insulators:

Demos:

Place a charge on a balloon and notice charge location.

Have students charge a letter and then do the same. Ask how a copier works.

Use VDG to see of charge Is confined to areas


Ways to charge an object
Ways to Charge an object

1) Charge by Contact or (friction):___________________________________


Triboelectric Series: A List that ranks materials according to how well they charge either (+) or (-). (refer to hand out)

  • + POSITIVE END OF SERIES (materials with lower work function)

  • asbestos

  • glass

  • nylon

  • wool

  • lead

  • silk

  • aluminum

  • paper

  • cotton

  • steel

  • hard rubber

  • nickel & copper

  • brass & silver

  • synthetic rubber

  • orlon

  • saran

  • polyethylene

  • teflon

  • silicone rubber

  • - NEGATIVE END OF SERIES (materials with higher work function)


Charge by polarization
Charge by Polarization:

Force between Charges:

Demo:

Have students hold balloons with charge to eachother.

Electrons and Electrons:_________

Protons and Protons:____________

Electrons and Protons:___________




Extension activities
Extension Activities:

Pie Pan Activity:

1) Describe How to make the aluminum ball bounce back and forth when you touch the ball.

2) Describe why the aluminum ball bounces back and forth when you touch it.


Extension activities continue
Extension Activities Continue

Van de Graaf Generator Lab

Text Reflection Problems


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