P3 Particles in Action Defintions of Key Words 3.0 / 5 based on 1 rating ? PhysicsEnergyGCSEAll boards Created by: Chloe StaiteCreated on: 26-04-11 11:05 Absolute Zero The coldest temperature that can be reaches 0K or -273 1 of 14 Alpha Decay the emission of alpha particles by unstable nuclei containing more than 82 protons 2 of 14 Alpha Particle Consists of 2 protons and 2 neutrons emitted from nuclei of radioactive substances during alpha decay 3 of 14 Beta Decay the emission of An electron or positron from an unstable nucleus giving a nucleus with the same mass number but different proton number 4 of 14 Cathode heated metal wire that emits electrons 5 of 14 Daughter Nucleus more stable nucleus produced by radioactive decay of an unstable nucleus 6 of 14 Electron negatively charged particle 7 of 14 Electron Gun device that uses a heated cathode and attractive anode to acclerate the elcetrons emitted from the cathode by thermionice emission 8 of 14 Fundamental Particles The smallest particles that can exist used to make other more complex particles 9 of 14 Isotopes atoms of the same element that have the same number of protons but a different number of neutrons 10 of 14 Kelvin Scale the temperature scale used by scientists 1 degrees= 1K 11 of 14 Lepton fundamental particle like a electron or positron 12 of 14 Neutron a neutrally charged subatomic particle found in a nucleus of atoms made from up, down down quarks 13 of 14 Oscilloscope a device using a beam of electrons that show patterns produced by rapidly changing voltages 14 of 14
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