RADON PRACTICE EXAM TEST UPDATED STUDY
QUESTIONS AND ANSWERS GRADED A+
✔✔What two particles are found in the nucleus? - ✔✔Protrons & Neutrons.
✔✔What is the atomic number of 2He^4? - ✔✔2
✔✔What is an atomic number? - ✔✔The number of protons in an atom.
✔✔What is the atomic weight of a material? What unit is it measured in? - ✔✔How
much the atoms weighs (typically same as mass number [# protons + #neutrons]).
Amu's
✔✔What is the mass number of an atom? What is the mass number of 86Rn^222? -
✔✔# protons + #neutrons in the nucleus; 222
✔✔What element is the immediate parent to Radon? - ✔✔Radium
✔✔What distinguises one element from another? - ✔✔Number of protons
✔✔While protons are unique for each element what varies? - ✔✔Neutrons
✔✔What are isotopes? - ✔✔Elements with the same number of protons but different
numbers of neutrons.
✔✔What is an electron volt a unit of? - ✔✔Energy
✔✔What is the most penetrating particle? - ✔✔Gamma
✔✔What is the largest particle typically? - ✔✔Alpha
✔✔What particle gamma, alpha or beta can't penetrate through a piece of paper? -
✔✔Alpha
✔✔How is 1,000,000 electron volts written? - ✔✔1 MEV
✔✔Where does the energy associated with an electron volt come from? - ✔✔Energy
acquired by an electron when it passes through a 1 volt difference
✔✔What are gamma rays? - ✔✔High energy electromagnetic radiation
✔✔What particle gamma, alpha or beta carries the most energy? - ✔✔Alpha
, ✔✔What particle gamma, alpha or beta carries the most charge? - ✔✔Alpha
✔✔When are alpha particles most dangerous to human? - ✔✔When the particle is
penetration the INSIDE tissue of a human lung. When we breathe them into our body.
✔✔Assume 10 pCi/l in a closed container. What will be the radon concentration after 8
days? - ✔✔Day 8 = 2.5 pCi/l
✔✔Assume 20 pCi/l in a closed container. What was the radon concentration 12 days
ago? - ✔✔Day 1 = 160 pCi/l
✔✔Assume a half life of 3 mins. How many minutes will you have 1/8 of what you
currently have. - ✔✔1 = 3 mins; 1/2 = 6 mins; 1/8 = 9 mins
✔✔Who are Radons most dangerious daughters? - ✔✔Polonium -214, Bismuth-214,
Polonium-218
✔✔Draw a alpha, gamma, and beta ray. - ✔✔
✔✔What is the half life of Radon? - ✔✔4 days
✔✔What is a rad? Whats a gray? - ✔✔Energy absorbed per KG. Gray = 100 rads
✔✔What is a REM? - ✔✔Rad x QF (quality factor)
✔✔Assume you receive a does of 10 rads of alpha particles. How many rems have you
received? - ✔✔REMS = Rad x QF (alpha QF = 20)
10*20 = 200 REMS
✔✔Which is larger, 10 rems of beta or 3 rems of neutrons? - ✔✔10 rems beta = 10 x 1
3 rems neutrons = 3 x 5
✔✔What's the quality factor of alpha? - ✔✔20
✔✔What's the quality factor of beta? - ✔✔1
✔✔What's the quality factor of gamma? - ✔✔1
✔✔What's the quality factor of proton? - ✔✔10
✔✔What's the quality factor of neutron? - ✔✔5
✔✔Becquerel, Curie, and Picocurie are all units of what? - ✔✔Radiation
QUESTIONS AND ANSWERS GRADED A+
✔✔What two particles are found in the nucleus? - ✔✔Protrons & Neutrons.
✔✔What is the atomic number of 2He^4? - ✔✔2
✔✔What is an atomic number? - ✔✔The number of protons in an atom.
✔✔What is the atomic weight of a material? What unit is it measured in? - ✔✔How
much the atoms weighs (typically same as mass number [# protons + #neutrons]).
Amu's
✔✔What is the mass number of an atom? What is the mass number of 86Rn^222? -
✔✔# protons + #neutrons in the nucleus; 222
✔✔What element is the immediate parent to Radon? - ✔✔Radium
✔✔What distinguises one element from another? - ✔✔Number of protons
✔✔While protons are unique for each element what varies? - ✔✔Neutrons
✔✔What are isotopes? - ✔✔Elements with the same number of protons but different
numbers of neutrons.
✔✔What is an electron volt a unit of? - ✔✔Energy
✔✔What is the most penetrating particle? - ✔✔Gamma
✔✔What is the largest particle typically? - ✔✔Alpha
✔✔What particle gamma, alpha or beta can't penetrate through a piece of paper? -
✔✔Alpha
✔✔How is 1,000,000 electron volts written? - ✔✔1 MEV
✔✔Where does the energy associated with an electron volt come from? - ✔✔Energy
acquired by an electron when it passes through a 1 volt difference
✔✔What are gamma rays? - ✔✔High energy electromagnetic radiation
✔✔What particle gamma, alpha or beta carries the most energy? - ✔✔Alpha
, ✔✔What particle gamma, alpha or beta carries the most charge? - ✔✔Alpha
✔✔When are alpha particles most dangerous to human? - ✔✔When the particle is
penetration the INSIDE tissue of a human lung. When we breathe them into our body.
✔✔Assume 10 pCi/l in a closed container. What will be the radon concentration after 8
days? - ✔✔Day 8 = 2.5 pCi/l
✔✔Assume 20 pCi/l in a closed container. What was the radon concentration 12 days
ago? - ✔✔Day 1 = 160 pCi/l
✔✔Assume a half life of 3 mins. How many minutes will you have 1/8 of what you
currently have. - ✔✔1 = 3 mins; 1/2 = 6 mins; 1/8 = 9 mins
✔✔Who are Radons most dangerious daughters? - ✔✔Polonium -214, Bismuth-214,
Polonium-218
✔✔Draw a alpha, gamma, and beta ray. - ✔✔
✔✔What is the half life of Radon? - ✔✔4 days
✔✔What is a rad? Whats a gray? - ✔✔Energy absorbed per KG. Gray = 100 rads
✔✔What is a REM? - ✔✔Rad x QF (quality factor)
✔✔Assume you receive a does of 10 rads of alpha particles. How many rems have you
received? - ✔✔REMS = Rad x QF (alpha QF = 20)
10*20 = 200 REMS
✔✔Which is larger, 10 rems of beta or 3 rems of neutrons? - ✔✔10 rems beta = 10 x 1
3 rems neutrons = 3 x 5
✔✔What's the quality factor of alpha? - ✔✔20
✔✔What's the quality factor of beta? - ✔✔1
✔✔What's the quality factor of gamma? - ✔✔1
✔✔What's the quality factor of proton? - ✔✔10
✔✔What's the quality factor of neutron? - ✔✔5
✔✔Becquerel, Curie, and Picocurie are all units of what? - ✔✔Radiation
