| front |
back |
revisions |
lasted changed by |
history |
| materials which weakly repel a magnet |
diamagnetic |
0 |
usnavalmd Thu, 04 Dec 2008 13:08:05 GMT |
 |
| materials which are neither attracted nor repelled by a magnet |
non magnetic |
0 |
usnavalmd Thu, 04 Dec 2008 13:08:05 GMT |
|
| materials that are weakly attracted by a magnet |
paramagnetic materials |
0 |
usnavalmd Thu, 04 Dec 2008 13:08:05 GMT |
|
| materials that are strongly attracted by a magnet |
ferromagnetic materials |
0 |
usnavalmd Thu, 04 Dec 2008 13:08:05 GMT |
|
| magnetic fields are always produced when an electrical charge is in motion |
electrical spin |
0 |
usnavalmd Thu, 04 Dec 2008 01:43:01 GMT |
|
the force acting between two magnetic poles is directly proportional to the product of the poles magnetic strength.
the force acting between two magnetic poles inversely proportional to the square of the distance between the two poles.
what are these |
coulombs law of magnetic poles |
0 |
usnavalmd Thu, 04 Dec 2008 01:43:01 GMT |
|
every magnet has two poles one at each end labeled north and south.
like magnetic poles repel each other and unlike poles attract each other.
what is this called |
laws of magnetism |
0 |
usnavalmd Thu, 04 Dec 2008 01:43:01 GMT |
|
| temporary magnets produced by means of an electric current |
electromagnets |
0 |
usnavalmd Thu, 04 Dec 2008 01:34:43 GMT |
|
| what are the best artificial magnets made of |
alloy of iron, nickel, cobalt in an aluminum base |
0 |
usnavalmd Thu, 04 Dec 2008 01:34:43 GMT |
|
| what is the most commonly produced shapes of artificial magnets |
bars or horseshoes |
0 |
usnavalmd Thu, 04 Dec 2008 01:34:42 GMT |
|
| what type of magnets consists of materials like iron, nickel, and cobalt |
artificial magnets |
0 |
usnavalmd Thu, 04 Dec 2008 01:34:42 GMT |
|
| what metals does lodestone consist of |
iron oxide or magnetite |
0 |
usnavalmd Thu, 04 Dec 2008 01:30:05 GMT |
|
| what is the largest natural magnet |
earth |
0 |
usnavalmd Thu, 04 Dec 2008 01:30:05 GMT |
|
| what type of magnets are produced by nature |
natural magnets |
0 |
usnavalmd Thu, 04 Dec 2008 01:30:05 GMT |
|
| the property of a magnet that permits it to attract magnetic substances |
magnetism |
0 |
usnavalmd Thu, 04 Dec 2008 01:30:05 GMT |
|
| what occurs when the electrical pressure becomes too high and the electrons jump from the negative charged body to the positive charged body |
creates a visible and audible spark |
0 |
usnavalmd Thu, 04 Dec 2008 01:22:09 GMT |
|
| the straining of electrons is called what |
electrical pressure |
0 |
usnavalmd Thu, 04 Dec 2008 01:22:09 GMT |
|
| an area of greater electron concentration to an area of lesser electron concentration |
static discharge |
0 |
usnavalmd Thu, 04 Dec 2008 01:22:09 GMT |
|
| only what can move in a solid conductor |
negative charges |
0 |
usnavalmd Thu, 04 Dec 2008 01:22:09 GMT |
|
| where is the concentration of charges on a curved surface the greatest |
where the curvature is the greatest |
0 |
usnavalmd Wed, 03 Dec 2008 18:58:33 GMT |
|
| electric charges exist on which side of conductor |
external surface |
0 |
usnavalmd Wed, 03 Dec 2008 18:56:57 GMT |
|
| the electrical force between two charges is directly proportional to the product of their magnitude and inversely proportional to the square of the distance between them |
coulomb's law of electrostatic |
0 |
usnavalmd Wed, 03 Dec 2008 18:56:57 GMT |
|
| lines of force moving in opposite directions do what |
attract one another |
0 |
usnavalmd Wed, 03 Dec 2008 18:56:57 GMT |
|
| lines of force traveling in the same direction do what |
repel one another |
0 |
usnavalmd Wed, 03 Dec 2008 18:56:57 GMT |
|
| the lines of force always move |
from a positive charge to negative charged particle |
0 |
usnavalmd Wed, 03 Dec 2008 18:48:24 GMT |
|
| an electrical field consists of what that are strongest near the charged particle and becoming weaker as they progress farther away from the particle |
lines of force |
0 |
usnavalmd Wed, 03 Dec 2008 18:48:24 GMT |
|
| like charges repel unlike charges attract |
laws of electrostatic |
0 |
usnavalmd Wed, 03 Dec 2008 18:48:24 GMT |
|
| to make the process of electrification by induction permanent what do you need to do |
attatch a ground to the metal body |
0 |
usnavalmd Wed, 03 Dec 2008 18:48:24 GMT |
|
| if a negatively charged object is brought near an uncharged metal body the electrons in the metal nearest the negative charged body will be repelled |
process of electrification by induction |
0 |
usnavalmd Wed, 03 Dec 2008 18:35:08 GMT |
|
| what is the region or zone surrounding every charged body which force is exerted |
electrical field
electrostatic field or
dielectric field |
0 |
usnavalmd Wed, 03 Dec 2008 18:35:08 GMT |
|
| a charged body confers the opposite charge on a neutral body that comes into its electrical field |
induction |
0 |
usnavalmd Wed, 03 Dec 2008 18:35:08 GMT |
|
| the process by which a charged body confers the same type of charge on an uncharged body it comes into contact with |
conduction |
0 |
usnavalmd Wed, 03 Dec 2008 18:35:08 GMT |
|
| the amount of electrification that may be produced by friction is determined by what |
the valance structure of that object |
0 |
usnavalmd Wed, 03 Dec 2008 18:22:45 GMT |
|
| the removal of electrons from one object and the gaining of electrons by another object |
friction |
0 |
usnavalmd Wed, 03 Dec 2008 18:22:45 GMT |
|
| what are the methods of electrification |
friction
conduction
induction |
0 |
usnavalmd Wed, 03 Dec 2008 18:22:45 GMT |
|
| the process by which electrons are added or removed by the body |
electrofication |
0 |
usnavalmd Wed, 03 Dec 2008 18:22:45 GMT |
|
| a connection made to the earth which has a potential charge of zero |
ground |
0 |
usnavalmd Wed, 03 Dec 2008 18:17:45 GMT |
|
| the branch of physics that deals with stationary or resting charges |
electrostatic |
0 |
usnavalmd Wed, 03 Dec 2008 18:17:45 GMT |
|
| these have good conductivity and the crystal lattice consists of positive ions permeated by a cloud of electrons |
metallic crystals |
0 |
usnavalmd Wed, 03 Dec 2008 18:17:45 GMT |
|
| hard often brittle materials like carbon |
covalent crystals |
0 |
usnavalmd Wed, 03 Dec 2008 18:17:45 GMT |
|
| poor conductors of electricity due to strength of the ionic bond |
ionic crystals |
0 |
usnavalmd Wed, 03 Dec 2008 18:11:17 GMT |
|
| what are the types of crystal solids |
ionic crystals
covalent crystals
metallic crystals |
0 |
usnavalmd Wed, 03 Dec 2008 18:11:17 GMT |
|
| materials which have an energy gap that falls between that of insulators and conductors |
semi conductors |
0 |
usnavalmd Wed, 03 Dec 2008 18:11:17 GMT |
|
| all good conductors are what |
metals |
0 |
usnavalmd Wed, 03 Dec 2008 18:11:17 GMT |
|
| materials with many free electrons and offer very little resistance to the flow of electricity |
conductors |
0 |
usnavalmd Wed, 03 Dec 2008 18:00:37 GMT |
|
| materials which have very few free electrons and offer a large resistance to the flow of electricity |
insulators |
1 |
usnavalmd Thu, 04 Dec 2008 13:53:15 GMT |
|
| with an applied force electrons can be made to move in a given direction |
electrical current |
0 |
usnavalmd Wed, 03 Dec 2008 18:00:37 GMT |
|
| the area outside the hold of an atom where electrons move freely |
conduction band |
0 |
usnavalmd Wed, 03 Dec 2008 18:00:37 GMT |
|
| this band represents the amount of energy required to move an electron from the valence band to the conduction band |
forbidden band |
0 |
usnavalmd Wed, 03 Dec 2008 16:19:07 GMT |
|
| the energy band in which electrons exist as they form the crystal lattice |
valence band |
0 |
usnavalmd Wed, 03 Dec 2008 16:19:07 GMT |
|
| when matter forms into a crystal lattice the energy levels of these atoms combine to form what |
energy bands |
1 |
usnavalmd Fri, 05 Dec 2008 01:03:45 GMT |
|
| crystal solids are geometric patterns that are three dimensional structures called what |
crystal lattice |
0 |
usnavalmd Wed, 03 Dec 2008 16:08:46 GMT |
|
| atoms and molecules combine to form repeated geometric shapes |
crystal solids |
0 |
usnavalmd Wed, 03 Dec 2008 16:08:46 GMT |
|
| what are examples of amorphous solids |
glass & plastic |
0 |
usnavalmd Wed, 03 Dec 2008 16:08:46 GMT |
|
| solids with no orderly arrangement of atoms and molecules |
amorphous solid |
0 |
usnavalmd Wed, 03 Dec 2008 16:08:46 GMT |
|
| niether solid nor gaseous characterized by free movement of the constituent molecules among themselves but without the tendency to seperate |
liquid |
1 |
usnavalmd Thu, 04 Dec 2008 13:10:18 GMT |
|
| matter takes a specific shape not dependent on containers |
solid |
0 |
usnavalmd Wed, 03 Dec 2008 16:03:21 GMT |
|
| a fluid that has neither independent shape nor volume but tends to expand indefinitely |
gas |
0 |
usnavalmd Wed, 03 Dec 2008 16:03:21 GMT |
|
| what are the three states of matter |
gas
liquid
solids |
0 |
usnavalmd Wed, 03 Dec 2008 16:03:21 GMT |
|
| matter may be found in one of three states depending on the average velocity of its molecules |
forms of matter (phases of matter) |
0 |
usnavalmd Wed, 03 Dec 2008 15:57:03 GMT |
|
| this type of bond serves to hold metallic atoms together |
metallic bonding |
0 |
usnavalmd Wed, 03 Dec 2008 15:57:03 GMT |
|
| a convalent bond in which there is an unequal sharing or attraction for the shared electrons |
polar covalent bond |
1 |
usnavalmd Thu, 04 Dec 2008 12:34:19 GMT |
|
| a covalent bond which there is an equal sharing or attraction for the shared electrons |
non polar convalent bond |
0 |
usnavalmd Wed, 03 Dec 2008 15:57:03 GMT |
|
| the sharing of valence electrons between two or more atoms |
covalent bonding |
0 |
usnavalmd Wed, 03 Dec 2008 15:24:59 GMT |
|
| the process by which an atom gains or loses orbital electrons |
ionization |
1 |
usnavalmd Fri, 05 Dec 2008 04:16:05 GMT |
|
| the bonding of metals and non metals |
ionic bonding |
0 |
usnavalmd Wed, 03 Dec 2008 15:24:59 GMT |
|
| elements are linked together utilizing the valence electrons |
chemical bonds |
0 |
usnavalmd Wed, 03 Dec 2008 15:24:59 GMT |
|
| atoms with 4 valence electrons are |
niether negative or positive |
0 |
usnavalmd Wed, 03 Dec 2008 15:19:21 GMT |
|
| atoms with five or more valence electrons are |
negative |
0 |
usnavalmd Wed, 03 Dec 2008 15:19:21 GMT |
|
| atoms with three or less valence electrons are |
positive |
0 |
usnavalmd Wed, 03 Dec 2008 15:19:21 GMT |
|
| the number of electrons an atom gains, loses, or shares when forming a compound |
valence state |
0 |
usnavalmd Wed, 03 Dec 2008 15:19:20 GMT |
|
| chemically unstable atoms are those that contain how many valence electrons |
1 - 7 |
0 |
usnavalmd Wed, 03 Dec 2008 15:15:29 GMT |
|
| chemically stable atoms are those that satisfy what |
the rule of octet |
0 |
usnavalmd Wed, 03 Dec 2008 15:15:29 GMT |
|
| the valence electrons are responsible for all |
chemical and electrical activities of the elements |
0 |
usnavalmd Wed, 03 Dec 2008 15:15:29 GMT |
|
| the electrons with the outermost energy level |
valence electrons |
0 |
usnavalmd Wed, 03 Dec 2008 15:15:29 GMT |
|
