science (earth,electricity and heat) Flashcards
measurement of average kinetic energy of the particles in a body
heat aand temperature
all particles of matter are in a state of constant motion
kinetic molecular theory of matter
used to measure temperatures
thermometer
fundamentl quality of matter
temperature
discovered farenheit and experimented with an ice salt solution and a thermometer
daniel farenheit
discovered celsius with pure water
anders celsius
known as lord kelvin and discovered the temperature scale kelvin
wiliam tomson
if there is no net flow of thermal energy between them”ballance of transfer of heat”
themoequilibrium
give the formula
farenheit to celsius
5/9(f-32)
give the formula
celsius to farenheit
(9/5*c)+32
give formula
celsius to kelvin
k=c+273.15
is a way of heat transfer
electromagnetic waves
occurs in solid and is direct conduction of heat
conduction
transfer of heat via electro magnetic waves
radiations
occurs in liquids and gasses,transferred by the movement of currents
convection
it is the phenomenon observed in all states of matter, process where an object expands with exposure to heat
thermal expansion
amount of heat needed to raise 1 gram to 1 degress celsius
specific heat
defines the tendency of an object to change it’s dimension
thermal expansion
change of from 1 state of maatter to another
phase changes
solid to liquid
melting
liquid to solid, molecules slow down
freezing
liquid to gas molecules speed up and if man made heat applied
vaporization
liquid to gas if natural heat is applied
liquid to gas
gas to liquid, molecules slow down
condensation
solid to gas when molecules speed up
sublimation
point at which solid changes to liquid
melting point
point at which liquid to gas
boiling point
point where liquid turns into solid
freezing point
flow of electrical power/charge
electricity
discovered the voltaic cell in 1800
alessandro volta
invented the incandescent lampin 1879
thomas edison
flow of charged paticles from one region to another
electrical current
energy gained frrom flow of excess electrons
electrical energy
all matter is made up of?
atoms
what is at the senter of each atom and what is the things surronding it
nucleus and electrons
carries a negative charge and is free moving
electrons
has no electric charge
neutrons
has postive charge and is heavier than electrons
protons
l
direction of current from the postive terminal to the negative
conventional
direction of current is from negative to positive terminal
electron flow
guess the formula
If
I==amount of time(A)
T=time(s)
q=number of of charges(C)
I=q/t
is the unit of measurement for current
ampere(A)
made significant contributions to electricity
andre-maire ampere
complete or closed path through which charges flow from 1 terminal to another
circuit
what consists of source,load and conducting wires
simple circuit
external work needed to bring a charge fro 1 location to another
electric potential difference( voltage)
used to measure voltage
voltmeter
formula for voltage
v=work/(q)unit of charge
1 volt is equivlent to one?
joule per columb(j/c)
opposition that a substance offers to the flow of current
electrical resistance
unit of measurement of resistance
ohms(Ω)
in a circuit the current(I) varies directly as the potential difference(V) is applied ,inversly the resistance(R) of the conductor
Ohm’s law
component that regulates the flow of current in circuit
resistors
other formula for voltage
I(current-A)* R(resistance-Ω)=Voltage
they can be used world wide
circuit diagrams
provides only 1 path for the flow of current, if there is a failure or break in any part the circuit would cease to function
series circuit
provides 2 or more paths for the flow of current,would still work if there is a failure or breakage in any part
parallel circuit
shaking of rocks underneath the surface
earthquakes
earthquakes propagate through?
seismic waves
are vibrations which carry energy away fro the focus and across the surface
seismic waves
point beneath earth’s surface where rock is under stress triggering the earthquake
Focus
point directly above the focus
epicenter
surface that splits during an eathquake
faultplane
tectonic earthquakes are caused by?
faults,plate boundaries
volcanic earth quakes are caused by?
volcanic eruptions
break in earth’s crust
fault
has moved once in the last 10,000 years
active fault
no geological activity for the past 10,000 years
inactive fault
movement is up or down parallel to the dip of the iclined fault
dip slip movement
