Flashcards
Radioactivity
Cards in this deck (10)
- 1Alpha particleRelatively large meaning more collisions meaning it is not very penetrative but very ionising
Positive charge so is deflected by electric and magnetic fields - 2Beta particleSmaller then alpha particles meaning less collision so it is more penetrative but less ionising then Alpha particles
Negative charge meaning it is deflected by electric and magnetic fields but in the opposite direction to Alpha - 3Gama wavesIs a electromagnetic so is very penetrative but then weak at ionising
Does not have a charge as its a wave so is not deflected by electric or magnetic fields - 4Alpha DecayThe atom looses 2 neutrons and 2 protons which fly off as a Alpha particle
- 5Beta DecayIn the atom a neutron turns into a proton and electron and the electron is fired straight out of the nucleus
- 6ionisationWhen radiation knocks out an electron when it goes through a material causing it to become an ion
- 7isotopeAtoms of the same elements with different numbers of neutrons
- 8Half-LifeThe time taken for the original count rate to decrease by half
The time taken for the number of radioactive nuclei to decrease by half - 9DatingRadioactive dating - Used to find the the age of ancient material
Carbon dating - Used to find the age of organic material
uranium dating - Used to find the age of igneous rock - 10Background radiationradiation produced by the environment, space and x-rays, it is harmless but all around us
Information
- Description
- GCSE Physics (Unit 2) Flashcards on Radioactivity , created by rhino67621 on 13/04/2015.
- Created by
- rhino67621
- Views
- 1
- Rating