Unit 2 Vocab
Conductors and Insulators
Triboelectric Charging
Charging by Conduction
Charging by Induction
Static Electricity and The Law of Electrical Charges
100
What is an anion?
A negatively charged ion
100
What type of materials are good conductors or electricity?
Metals
100
What is electric charge?
Whether an object has an excess or deficit of electrons relative to protons
100
When you charge by conduction the electrons can move _________.
Freely
100
What is polarization?
The act of separating something into opposites.
100
Uncharged objects have a balance of what two particles?
Protons and electrons
200
What is a conductor?
A material that allows heat and electricity to pass through it.
200
Which type of materials (conductors or insulators) inhibit the flow of electrons?
Insulators
200
What is electron affinity?
It describes how much love or affinity an object has for electrons
200
When you charge by conduction are you transferring protons or electrons from one object to the other?
Electrons
200
What was the name of the device we made for our last lab?
Electrophorus
200
Objects with opposite electric charge _______ each other.
Attract
300
What is current?
The flow of electrons or the flow of electric charge.
300
In electrostatics, _______ are tightly bound in the nucleus and cannot move. (Protons/electrons)
Protons
300
You rub together silk and a balloon, which object will acquire a negative charge? 
Balloon
300
What is grounding?
The removal of electrons or providing a path for electric charges to flow safely into the ground
300
There are two steps involved with charging by Induction - what is the first step?
Polarization
300
What type of force is the Electrostatic force?
(Do you have to touch something?)
Non-contact force
400
What is the SI unit of electric charge?
Coulomb
400
Observe the image below. Is the sphere made of conducting material or insulating material?
Conducting
400
Objects near the bottom of the triboelectric scale are more likely to gain or lose electrons?
Gain
400
Which material would allow for the uniform distribution of electrons - rubber or aluminum?
Aluminum
400
There are two steps involved with charging by Induction - what is the second step?
Charging
400
What is the numerical value for 1 quantum of charge?
(Don't forget the units)
1.6x10-19 Coloumbs
500
What is quantized?
Bundles or packages of electrons
or
Electrons can only exist at specific energy levels, separated by specific intervals
500
Why is sea water conducting but distilled water is not?
Because sea water has dissolved ions/minerals in it. Distilled water has all the ions removed.
500
What is the Law of Conservation of Charge?
During electrostatic processes, the total amount of charge is conserved.
So charge is neither created nor destroyed, but only transferred from one about to another in the form of electrons.
500
Sphere A has as -4 charge and touches neutral Sphere B. Both are made of conducting material.
What is the overall charge on each sphere after they touch?
-2
500
When you build the Electrophorus device - a neutral foam plate was rubbed with fur or wool, what charge did it obtain?
Negative
500
Suppose that two point charges, each with a charge of +1.00 Coulomb are separated by a distance of 1.00 meter. Determine the magnitude of the electrical force of repulsion between them. k= 9 x10 9 N•m2/C2
9 x10 9 Coulombs