Science 9.1 - ? Flashcards
rubbing amber would cause bits of straw to be attracted
Thales of Miletus
the study of the nature, behavior, and uses of statics and related phenomenon
electrostatics
other materials besides amber would produce the same magnetic force
William Gilbert
discovered static electricity and the existence of two types of charge
Benjamin Franklin
a property that allows particles to attract and repel other charged particles by the electromagnetic force
electric charge
positive (+) charge
proton
negative (-) charge
electron
the interaction between electrons and other charged particles
electricity
describes an atom or other object with an equal number of positive and negative charges
neutral
an electric charge that is stationary on the surface of a charged object; the simplest form of electricity
static electricity
Scientists refer to a deficiency of electrons as _______
positive
Scientists refer to an excess of electrons as _________
negative
the SI unit of electric charge
Coulomb
the law stating that opposite charges attract each other but like charges repel each other
law of electric charges
the law stating that strength of attraction or repulsion between two charged objects is directly related to the strength of the charges and inversely related to the square of the distance between them
law of electric force
the region around a charged object in which other objects are attracted or repelled by an electric force
electric field
arrows that indicate how a positive charge in the field would move
lines of force
an electric field with even strength throughout
uniform field
the transfer of an electric charge through direct contact
conduction
Charging by conduction is ________
permanent
A charge imparted by conduction has the ______ sign (positive or negative) as the original charge
same
the law stating that the total electric charge is the same before and after an interaction
law of conservation of charge
the process of diverting unwanted electric charge directly into the earth
grounding
the process of imparting electric charge from one object to another without direct contact between the objects
induction
Charging by induction and charging by conduction do share one similarity, which is ________
they both obey the law of conservation of charge
charging by induction is ______
temporary
the flow of charge from one place to another
current
an atom or group of atoms that has an electric charge
ion
simple device that uses the laws of electrostatics to detect small electric charges
electroscope
