Radon Measurement Professional Exam (InterNACHI and AARST) Latest Update 100% Solved

Radon Measurement Professional Exam (InterNACHI and AARST) Latest Update 100% Solved A _____ refers to the series of transformations that a given radionuclide will undergo, as well as the kind of radiation it emits, which are characteristic of the radionuclide decay chain _____ are the extremely small particles of which we, and everything around us, are made. atoms If one atom were the size of the Houston Astrodome, its nucleus would be roughly the size of a _____. pea T/F: The balance of the forces in the nucleus of an atom determines whether a nucleus is stable or unstable (radioactive). true As an unstable nucleus emits radiation as it disintegrates, the radionuclide transforms to different nuclides, and this process is called _____. radioactive decay _____ is the energy that is released as particles or rays during radioactive decay. radiation _____ particles include two protons and two neutrons. alpha We're really concerned with the _____ particles, because they can be stopped by a sheet of paper where they release their energy. alpha Some decay products of radon emit beta particles, but its alpha-emitting decay products pose a much _____ health risk. greater _____ photons can pass through many kinds of materials, including human tissue. gamma _____ are the source of cell damage in the lungs. RDPs (radon decay products) T/F: Radon gas tastes like sulphur. false T/F: If RDPs plate out on a wall, they are a hazard. false If the radon concentration is 75 pCi/L, and the decay-product concentration is 0.3 WL, the equilibrium ratio would be calculated as follows: ER = (0.3) x (100) / 75 = _____. 0.4 The average indoor radon level is _____ pCi/L. 1.3 If a gallon container held air with 4 pCi/L, there would be about 4 (quarts per gallon) multiplied by 4 (pCi/L) multiplied by 2.22 disintegrations per minutes, or about _____ disintegrations per minutes of radon atoms in the container. 35.2 Radon is the _____ most important cause of lung cancer after smoking in many countries. 2nd T/F: The World Health Organization (WHO) says radon causes up to 15% of lung cancers worldwide. true T/F: There exists a known threshold concentration