Science 1 Flashcards
what is an ionic substance
metal mixed with something that isn’t a metal
definition of static
electron build up (lightning) naturally occuring
definition of current
free flowing electrons always manmade
what do protons make up
the character of the atom
what do electrons provide
electricity
what is a conductor
a substance that allows electrons to pass through easily
is there such thing as a perfect insulator or conductor
no
example of a conductor
metal ionic substance in H2O
what is an insulator
a substance that does not allow the passage of electrons
example of an insulator
air
example of a ressistor
computer
what does an ionic substance in water do
conducts a ton of electricity
do protons move
no
what is physics
the study of energy motion
electricity is
the movement of electrons
couloms are
lots of electrons
proton mass
1 amu
proton charge
+1
proton location
nucleus
proton function
confers identity
neutron mass
1 amu
neutron charge
0
neutron location
nucleus
neutron funtion
creates stability
electron mass
0 amu
electron charge
-1
electron location
electron cloud
electron function
reactions
how many electrions are in a coulom
6250000000000000000
positive charge
electron loss
negative charge
electron gain
is static DC or AC
DC
is static electricity naturally occuring
yes
what is EPD
electrical potential difference
what is EPD measured in
charge
what does EMF stand for
electromotive force
how is EMF charged
volts
what does a triboelectric scale, electroscope, and vande Graaff generator do
determines what matter gains E and loses E
what do all electrons want
to go to the ground
first step of friction
build up of E
second step of Friction
EPD
third step of friciton
EMF (discharge, voltage, lightening)
describe friction
discharge within cloud between negative and positive top
describe Electric potential difference
is created when typical lightening hits the ground
Describe EMF
pulls electrons out of clouds
what is resistance
the ability of an object to slow doesn electrons (measured in Ohms)
what is voltage
the force that pushes electrons measures in volts
what is current
the speed of coulumbs per second (measured in AMPS)
direct relationship
both numbers move in the same direction
indirect relationship
the numbers move in different directions
describe the parts of the atoms
the nucleus has protons and neutrons in the middle, it is surronded by an electron shell
how are electrons measured
voltmeter
how is charge measured
amenmeter
Luigi Galvani
facts: lived in italy, he was a priest but when to medical school
contribute: bioelectrongensis, nerve carried electricity, frankenstein
energy is anything that causes…
motion
electrons exist in a….
cloud
electrons are positive or negative
negative
conductor example
metals and ionic substances in water
do protons move
no
give an example of static
lightenting
example of current
outlets
count alessandro Guiseppe Antonio
fact: emperor napolean made him a count, discovered methane, born in como
Contribute: modern battery
what does static mean
stopped/build up of electrons
what does current mean
flow
what is EPD measured in
charge
what is EMF measured in
volts
all matter is —- charged
neutrally
what is a triboelectric scale
what determines what matter gains electrons and loses electrons
what is an electroscope
what determines how many electrons are on a charged surface
what is a van de Graff generator
it generates static
charge
formula symbol:
measured in:
unit symbol:
q
coulombs
C
current
formula symbol:
measured in:
unit symbol:
I
amps
A
voltage
formula symbol:
measured in:
unit symbol:
V
Volts
V
resistance
forumula symbol:
measured in:
unit symbol:
R
Ohms
O thing
what is resistance?
the ability of an object to slow down
what is current?
the speed of coulombs per second
what is voltage?
the force that pushes electrons measured in volts
energy
Formula symbol:
measured in:
unit symbol:
Notes:
E
Watt Hours
Wh
can be KwH
power
Formula symbol:
measured in:
unit symbol:
Notes:
P
Watts
W
energy over time
time
Formula symbol:
measured in:
unit symbol:
Notes:
T
hours
h
be sure to convert
cost
Formula symbol:
measured in:
unit symbol:
Notes:
c
dollars
$
rate
Formula symbol:
measured in:
unit symbol:
Notes:
R
dollars per KwH
$/KwH
what is this
emf source
what is this
wire
what is this
switch
what is this
resistor
what is this
light bulb
what is this
voltmeter
what is this
ammeter
what is this
motor
what is this
fuse
what is this
circuit breaker
georg Simon Ohm
built electric circuitry after the girl - V=IR
science teacher
do all pathways get the same voltage in a parellel circuit
yes
what happens in a parellel circuit
ressistance decreases, current increases
difference between a fuse and a circuit breaker
fuse: one time use, uses heat, cheap, easy to install, triggered by current
circuit breaker: measures current, ammeter + switch, expensive, proffesional installation
what is a ammeter
measures the speed of electrons in a circuit
no resistance
must be connected in series
what is a voltmeter
measures the force of electrons in a circuit
has lots of resistance
must be connected in parellel
resistance and current of a series circuit
resistance increased
current decreased
what do all circuits require
a conductor
a EMF source
a resistor
closed circuit
a continious path of electrons
open circuit
a break in the path of electrons
switch
a reusable break in the circuit
what is DC
the electrons go in one direction the whole time
what is AC
electricty comes from both sides of the wire
cycelic flow of electrons
what are the principles of electromagnetism
electricity will effect a magnetic feild
passing a wire through a magnetic feild
coils move through pass
Thomas Edison
DC power is a river flowing
AC power is used for evil power electrons
explain a generator
a magnet wrapped in coils is spun really fast
where does electricity come from
generators (220) go to high voltage wires (23,000) go to substations (7360) go to transformer (120)
energy is the amount of energy used…
in a certain amount of time
George WestingHouse
thought DC was dangerous was is war of currents
Tesla
created AC current
what are the electrical components of the body
nerves, brain, spinal cord, heart and muscle
how is electricity generated in the body
by ionoic imbalances on the plasma membrane
label the neuron
what is important to remember about the neuron
it only moves dendrite to axon
what is a schwann cell made of
myelin
what is an ion
a atom with a charge
label the synapse
where do all electrical impulses begin
from the brain and they travel down the spinal cord to the nerves
where do reflexes originate
in the spinal cord and do not involve the brain
where do cardiac originate
the nodes of the heart generate their own elecrical impulses
