physics keywords / key terms

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  • Created by: chlobo77
  • Created on: 14-11-17 11:42
Absolute zero
Theoretical temperature when atoms stop vibrating.
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Acceleration
Rate of change in velocity- increase of speed=positive acceleration
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Ammeter
Devise to measure current
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Ampere
unit of electrical current written as amp or A Amps=coulombs/seconds
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Amplitude
maximum displacement of wave from rest position
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Anion
negativly charged ion
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Astronomical
Astronomical unit-average distnace between earth and sun ( about 148 million kilometers)
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Atmosphere
layer of gases around a planet, moon or celestial body
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Atom
Building blocks of matter
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Battery
Group of electrical calls connceted in series
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Cation
Positively charged ion
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Cell
Energy source providing electrical potential diffrence between 2 terminals
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Charge
Property or quality that some particales can have
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circuit
an energy sourse connected by conductors to electrical components
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Coma
The gas and dust surrounding the nucleus of a comet
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Conductor
things that electric current will flow through
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Constellation
one of the 88 named pattern of stars
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Coulomb
unit of elecrical charge one is written as C
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Current
flow of charges
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Deceleration
opposite of acceleration
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Displacent
distance moved in a particular direction
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Electron
one of 3 fundamenta particles with a negative charge
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Element (chemical)
something that cannot be split
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Fission
splitting of an atomic nucleus
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Force
pushes and pulls that make things move or change shape
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Frequency
how many times somwthing occurs in a given time (measured in herts Hz)
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Friction
resisting force
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Fusion
joining of atomic nuclei to form a large nucleus
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Galaxy
a very large cluster of stars in space
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Hemisphere
half of a sphere or globe
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Ion
charged atom or molecule
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Ionisation
atoms whenb theyve lost or gained one or more electrons
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Isulator
things that electrical current wil not flow through
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Kelvin
absolute temperature scale starting at absolute zero
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KWH
kilowatt-hour unit of energy
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Light year
distance travelled in a year at the speed of light
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Molecule
least amount of a compound
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Motor effect
result of current passing through a conductor (forming a magnetic field - externak magnetic field (fields will repel)
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Neutron
one of the 3 fundamental particles with no over all charge
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Newton
unit of force
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Nm2/kg2
newton meters2 per kilogram2 unit of universal Gravitational constant
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Nucleus ( atom)
centre of an atom
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Nucleus (comet)
solid part of the comet
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Nucleon
any 2 particles normally in an atomic nucleus
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Ohm
unit of electrical resistance`
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Ohm's law
volts=amps x ohms
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Parallel electric circuit
circuit that means components share an energy source but not the same current
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Particle
small piece of something
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Plasma
white hot gas made only of ions
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potential difference
diffrence of electrical potential between 2 points
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Power
amount of energy transfred per second measured in watts
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Proton
one of the 3 fundamental particles with a positive charge
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Resistance
the extent to which a conductor ihinders the electric current flow
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Resistor
circuit component to reduce current
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Satellite
body that orbits another larger body
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Series electrical circuit
circuit wherecomponds share current
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Speed
rate of change in distance
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synthetic polymer
a plastic
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Universal gravitational constant
a constant required by Newton's law of gravitation
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Velocity
speed in a stated direction
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Volt
unit of electromotive force or potental difference
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Voltage
energy available to drive a current
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Voltmeter
devise measuring electromotive force or potential difference
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Watt
unit of power
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Weight
force of gravity on mass weight = mass x gravity
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Other cards in this set

Card 2

Front

Rate of change in velocity- increase of speed=positive acceleration

Back

Acceleration

Card 3

Front

Devise to measure current

Back

Preview of the back of card 3

Card 4

Front

unit of electrical current written as amp or A Amps=coulombs/seconds

Back

Preview of the back of card 4

Card 5

Front

maximum displacement of wave from rest position

Back

Preview of the back of card 5
View more cards

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