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AQA P2 PHYSICS (SVS)
SVS severn vale docshort
| Question | Answer |
|---|---|
| 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 |
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