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is electrcity every where
does electrcity hold molecules together. |
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| involves electric charges , forces beetween them , aura that surrounds them, and their behavoir in materials |
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like kinds=
unlike kinds= |
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protons are ________ charged
electrons are ___________ charged |
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| what holds the nucleus together |
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Definition
| electrical forces and non electrical nuclear forces hold it together |
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Term
whenever something is charged are electrons created or destroyed
electrons are simply transfered from_____________________ |
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Definition
-they are neitheir created or destroyed
- one material to another |
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Term
| if an electron is removed from an atom is it neutral or negative or charged. |
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Term
a charged atom is called-
what ion has a positive-
what ion has one or more extra extra electrons, is negativley charged- |
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Definition
-ion
-positive ion
-negative ion |
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Term
| electrons can not be divided into_____________ |
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| the electrical force beetween two charges varies directly as the product of the charges and inversly as the square of the distance beetween them. opposites charges attract like charges repel |
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Definition
| electrons in outer shell of its atoms are not anchored=particle atoms are free to wander. |
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| materials that are poor conductors of electricity is called a ___________ |
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| is both insulator and conductor |
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what controls the flow of electrons in circuits for semi conductors_____________.
how much power are requierd for semi conductors. |
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at low temperatures electrical resistence dispears, acquire infinite conductivity to the flow of charge is called _____________.
-is heat lost and does it lose energy while going through the medium. |
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Term
| it is impossible to cause electrical charges if for example retards like gino lazaro rubbed a cat against a vert9ical carpet |
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| method of charging by rubbing things |
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| redistribuition of electrical charges in and on objects caused by the electrical influence of a charged object close by but not in contact. |
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| this is what happens when a cloud causes lightning |
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Definition
++++++++++++++++++++++++++++++++++++++++++++++++++++++++
___________________________________________________________
cloud
cloud
cloud
_________________________________________________________
-----------------------------------------------------------
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
___________________________________________________________
ground ground ground |
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Term
| when a charged rod is brought near an insulator , there ____are/are_____ not free electrons that migrte throughout the insulating material. |
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| when one side of of the atom or molecule is induced into becoming more neg/pos than the opposite side it is_________________ |
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Term
when a comb passes through your air the comb has a _______ charge.
what will happen to both sides of the paper while they are attracting |
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Definition
-positive
-neg on left pos on right |
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Term
| the force is gravitational, and the altered space surrounding a massive body is a |
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| space around every electrically charged body is filled with an________________ an aura that extends through space. |
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| the electric field concept helps us understand not only the forv=ces beetween isolated stationary charged bodeis but also ___________________. |
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Definition
| what happens when charges move. |
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energy moving through electric fields can be guided by what
. |
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Definition
| metal wires or teamed up with a magnetic field to move through empt space. |
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Term
| the amount of shielding depends on_________________. |
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Definition
| the material used for shielding |
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Term
is electric charge distribuition eqaul on a
--circle
-square
-rock thing |
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| a charged object has potential energy by virtue of its location in an ________________. |
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| we call the the energy the particle posses by virtue of its location=________________. |
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Definition
| electric potential eneergy |
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| the unit of electric charge is the coulumb, so we consider the electric potential energy _______________ of charge. |
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Term
| a charged baloon is extremely dangerous b/c it has a high voltage. t/f , why |
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Definition
| false, the amount of enrgy associated with the charge is small. |
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Term
| electric energy can be stored in a common device called a ___________. |
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Definition
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Term
| energy stored in a CAPAcitaor comes from _________________. |
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Definition
| work required to charge it. |
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