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AQA P2 PHYSICS (SVS)

SVS severn vale docshort

QuestionAnswer
Acceleration The rate at which an object increases in speed
Alternating current (a.c.) An electric current which changes direction of flow continuously
Attraction The drawing together of two materials with different types of charges
Charged Having an overall positive or negative electric charge
Circuit breaker A safety device which breaks an electric circuit if it is overloaded
Current The rate of flow of electric charge. Measured in Amps
Diode An electrical device that allows current to flow in one direction
Direct current (d.c.) An electric current that flows in one direction
Distance The space between two points
Electron Negatively charged sub-atomic particle
Electrostatic Producing or caused by static electricity
Energy The ability to do work; measured in Joules
Force A push or pull acting on an object
Friction The force that resists movement between two surfaces
Fuse A thin piece of wire that melts to break a circuit when it is overloaded
Ion A charged particle formed by the gain or loss of an electron by an atom
Isotopes Atoms of the same element with different no. of neutrons
Joule A measure of the energy or work done
Kinetic energy A measure of the state of motion of an object
Mass The quantity of matter in an object
Momentum The energy possessed by an object due to movement
Newton A measure of force
Neutron A neutrally charge sub-atomic particle
Nuclear Fission The splitting of atomic nuclei
Nuclear Fusion The joining together of atomic nuclei
Parallel circuit A circuit where there is more than one path for the current to take
Potential difference (p.d.) The difference in electrical charge between two charged points
Proton A positively charged sub-atomic particle
Repulsion The pushing away of two materials with the same type of charge
Resistance Opposition to the flow of an electric current
Resistor An electrical device that resists the flow of electric current
Series circuit A circuit where there is only one path for electric current
Speed The rate at which an object moves
Static electricity Electricity caused by rubbing that causes the loss or gain of electrons
Terminal velocity The maximum velocity reached by a falling object (forces are balanced)
Thermistor A component whose resistance varies with temperature
Transfer To move energy from one place to another
Transform To change energy from one form into another
Velocity The speed an object moves in a particular direction
Weight The gravitational force exerted on an object
Work The energy transfer that occurs when a force causes an object to move
Created by: docshort