Try this at home!

Water Bending

School blocks YouTube? Use the file below.

Water_Bending.mov

Water is an electrically polar molecule. This means it has a positive and negative pole. The water's negative pole is repelled by the negatively charged comb and the positive pole is attracted to the comb. This reorientation of charge makes the side of the water stream that is near the comb positive. Since opposites attract, the water stream is pulled towards the comb.

A water molecule.

rst.gsfc.nasa.gov/Sect20/A12.html

School blocks Youtube? Use file below.

| Static_ElectricityDetectionWater.mov |

 

D) Conservation of Charge - net charge of closed system remains constant

 

[ Flash1 ] [ Flash2 ]

 

 

If 2 charges OR MORE
are brought together, their
combined charge
is distributed evenly

 

 

 

 

Before contact
 
After contact


 

 

Charge is Evenly Distributed

 


Total charge before =

total charge after


 

 

 

 

 

Ex) Metal sphere A has a charge of +12 elementary charges and identical sphere B has a charge of +16 elementary charges.

After the two spheres are brought into contact, the charge on sphere A is

a)+28 elem. charges  c)+2 elem. charges
b)-2 elem. charges  d)+14 elem. charges

d)+14 elem. charges

 

 

Conservation of Charge - Flash
[ HTML5 ]

 

 

 

 

 

 

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