6th Grade Ch 2 Sec 1 Electric Charges And Static Electricity
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Transcript of 6th Grade Ch 2 Sec 1 Electric Charges And Static Electricity
Ch. 2 Sec. 1 Electric Charge & Static Electricity
YouTube video-Bill Nye Static Electricity
Interactions Between ChargesInteractions Between Charges
• same
• differentrepel
attract
electric field
• exerts force on other charged particles
• extends outward from every charged particle
static electricity
•buildup of charges on an object
– charges build up - do not flow
•neutral object becomes charged by gaining or losing electrons
• loses electronsmore protons positively charged
• gains electronsmore electrons negatively charged
++++
+
-
----
-
+ -+
+ - -
STATIC TUBE ACTIVITYMATERIAL PREDICTION
# 1-5
(1= MOST
5= LEAST)
# OF STYROFOAM
PELLETS
COTTON (purple)COTTON (purple)
RAYON (red)RAYON (red)
NYLON (white)NYLON (white)
SILK (yellow)SILK (yellow)
WOOLWOOL (brown tweed) (brown tweed)
3 methods by which
charges are transferred
friction conduction induction
frictionfriction
• transfer of electrons by rubbing
conconductionduction
• transfer of electrons by direct concontact
inductioninduction
•movement of electrons caused by electric field of another object
Examples of Static Cling
–clothes sticking together in clothes dryer
–wrapping food with plastic wrap
–using a photocopier
• when negatively charged object & positively charged object brought together electrons move until both objects have same charge
static discharge • loss of static electricity as electric charges move off an object
Lightning is a dramatic example of static discharge.
● electroscope
instrument that detects electric charge
Van de Graaff generator
• Produces static electricity
• Electrons are carried up a rubber belt & are transferred to the metal sphere
• The charge built up on the sphere is enough to send a spark several meters through the air.
Activity-The Versorium pg. 42
Unrubbed foam plate
Rubbed foam plate
Rubbed wool fabric
Aluminum Tent: Prediction
Aluminum Tent:
Observation
Paper Tent: Prediction
Paper Tent:
Observation