dateassignment mon tuestextbook page 399 #1,2,4 wedcalculating currents worksheet thurstextbook page...
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Date AssignmentMonTues •Textbook Page 399
#1,2,4Wed •Calculating currents
worksheetThurs •Textbook page 405#
7, page 413 # 6
Fri •Textbook page 430 # 1,3,4,5
AIM: How is an electric charge formed?
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Is the result of an electrical charge flowing
Electrical charge is when matter
experiences a force (movement)
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Smallest particle of
matter
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Made up of 3 subatomic particles
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1.PROTONSin the nucleus - Positive
charge2.NEUTRONS in the nucleus - No charge3.ELECTRONS outside the nucleus -
Negative charge
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ProtonsNeutrons
Electrons
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How can charges be detected?•Electroscope
•Metal rod with 2 thin metal leaves at 1 end
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• Charged object touches it charge travels into leaves leaves spread apart (Like charges repel)
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•Pulls objects together
•Between opposite charges (Opposites attract)
•Electrons & protons
+ -
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•Pushes objects apart •Like charges repel•Electrons repel each other
•Protons repel each other
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•# of protons equals # of electrons
•Makes atom neutral (no net charge)
ATOMS are free of charge
(neutral) when
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Objects become charged when…..
1. Lose electrons, becomes positively charge
8 protons, 8 electrons = no charge
Lose electron
8 protons, 7 electrons = Positively charged
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2. Gain electrons, becomes negatively charged
8 protons, 8 electrons = no charge
Gain electron
8 protons, 9 electrons = Negatively charged
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Negative Positive?
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Charges can be transferred. Before the shoe scuffs against the carpet, both the sole of the shoe and them carpet are neutral. As the shoe scuffs the carpet, electrons are transported from the carpet to the sole of the shoe.
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REDO INCORPORATE SLIDES BELOWREORDERCHANGE
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ElectricityIs the result of an electrical charge flowing
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Inside an atom, electrons have a negative charge and protons have a positive charge. These particles attract each other.
A charge is a measure of the extra positive or negative particles that an object has.
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Static Electricity
Static electricity is the charge that stays on an object.
Unlike charges attract each other, and like charges repel each other.
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The steady flow of electricity along a wire or a path called a circuit.
Circuit means to “go around.”
Current Electricity
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Types of Circuits
•A series circuit is a circuit that has only one path for the current.
•A parallel circuit has more than one path for current to travel.
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•Lights in our homes are wired in parallel circuits.
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Conductor•A conductor is a material that current can pass through easily, like metals.
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Resistor•A resistor is a material that resists, but doesn’t stop the flow of current.
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Insulator•An insulator is a material that current cannot pass through easily, like plastic.
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Electric Cell•An electric cell supplies energy to move charges through a circuit, like a battery.