DOE Core (RCT) Practice Exam with Updated & Verified
Questions and Answers A+ Graded 100% Excellence
Atomic Mass - CORRECT ANSWER-The actual weight of a particular isotope in AMU
The atomic # is the # of: - CORRECT ANSWER-Protons in the nucleus
The periodic table of the elements lists all known elements in order of: - CORRECT ANSWER-
Increasing atomic #
An action on an object that could cause the object to change speed or direction is identified as -
CORRECT ANSWER-Force
The Law of Conservation of Energy states that the: - CORRECT ANSWER-Total amount of
energy in a closed system remains unchanged
When the nucleons are combined to form a nucleus some of the mass is: - CORRECT
ANSWER-Converted to binding. energy
The equation E=mc^2 states that: - CORRECT ANSWER-Mass & energy are equivalent
When two or more light nuclei combine to from a large nucleus in fusion, this changes the: -
CORRECT ANSWER-Binding energy
Isotopes are defined as nuclides w/ the same: - CORRECT ANSWER-# of protons but a
different # of neutrons
The average dose, to the general population of the US, from all combined medical exposures as
part of man-made background radiation sources is approximately - CORRECT ANSWER-53
mRem/yr
The average dose, to the general population of the US, from consumer products as part of man-
made background radiation sources is approximately - CORRECT ANSWER-10 mRem/yr
The factor which contributes the greatest variability in dose from natural cosmic background
radiation is - CORRECT ANSWER-Altitude
Alpha radiation is defined as: - CORRECT ANSWER-A heavy particle w/ a mass of 4 amu & a
charge of +2 that is emitted from the nucleus
, Rad - CORRECT ANSWER-A unit of absorbed dose
Half-life - CORRECT ANSWER-The length of time required for one-half of the original # of
nuclei to disintegrate
Exposure - CORRECT ANSWER-The ionization caused by x-ray & gamma radiation in air
Most fission products are unstable because the ratio of - CORRECT ANSWER-Neutrons to
protons is too high (n:p)
Curie - CORRECT ANSWER-The activity of that quantity of radioactive material in which 37
billion atoms are transformed per second
The rate of decay & the type & energy of decay are unique for - CORRECT ANSWER-Each
radionuclide
If a nuclide is found to be radioactive, & has not been involved w/ a man-made process, the
nuclide is _____ radioactive - CORRECT ANSWER-Naturally
Identify one aspect associated w/ radioactive decay which most identifies a radionuclide -
CORRECT ANSWER-Rate of decay
Alpha particle - CORRECT ANSWER-A heavy particulate radiation consisting of 2 protons & 2
neutrons & a charge of +2
A beta particle transfers energy to the matter through which it is passing. The beta particle causes
an electron to be raised from one orbit to a higher energy state within the atom. The atom remain
neutrally charged. This is an example of: - CORRECT ANSWER-The excitation mechanism of
energy transfer
An alpha particle interacts w/ the atoms of the matter through which it is passing & transfers
energy to it. These electron field interactions can remove an electron from an orbit of a neutral
atom, forming charged particles by the passage of radiation through the media. This is an
example of: - CORRECT ANSWER-The ionization mechanism of energy transfer
Which of the following is a direct result of a neutron capture? - CORRECT ANSWER-Elastic
scattering
Questions and Answers A+ Graded 100% Excellence
Atomic Mass - CORRECT ANSWER-The actual weight of a particular isotope in AMU
The atomic # is the # of: - CORRECT ANSWER-Protons in the nucleus
The periodic table of the elements lists all known elements in order of: - CORRECT ANSWER-
Increasing atomic #
An action on an object that could cause the object to change speed or direction is identified as -
CORRECT ANSWER-Force
The Law of Conservation of Energy states that the: - CORRECT ANSWER-Total amount of
energy in a closed system remains unchanged
When the nucleons are combined to form a nucleus some of the mass is: - CORRECT
ANSWER-Converted to binding. energy
The equation E=mc^2 states that: - CORRECT ANSWER-Mass & energy are equivalent
When two or more light nuclei combine to from a large nucleus in fusion, this changes the: -
CORRECT ANSWER-Binding energy
Isotopes are defined as nuclides w/ the same: - CORRECT ANSWER-# of protons but a
different # of neutrons
The average dose, to the general population of the US, from all combined medical exposures as
part of man-made background radiation sources is approximately - CORRECT ANSWER-53
mRem/yr
The average dose, to the general population of the US, from consumer products as part of man-
made background radiation sources is approximately - CORRECT ANSWER-10 mRem/yr
The factor which contributes the greatest variability in dose from natural cosmic background
radiation is - CORRECT ANSWER-Altitude
Alpha radiation is defined as: - CORRECT ANSWER-A heavy particle w/ a mass of 4 amu & a
charge of +2 that is emitted from the nucleus
, Rad - CORRECT ANSWER-A unit of absorbed dose
Half-life - CORRECT ANSWER-The length of time required for one-half of the original # of
nuclei to disintegrate
Exposure - CORRECT ANSWER-The ionization caused by x-ray & gamma radiation in air
Most fission products are unstable because the ratio of - CORRECT ANSWER-Neutrons to
protons is too high (n:p)
Curie - CORRECT ANSWER-The activity of that quantity of radioactive material in which 37
billion atoms are transformed per second
The rate of decay & the type & energy of decay are unique for - CORRECT ANSWER-Each
radionuclide
If a nuclide is found to be radioactive, & has not been involved w/ a man-made process, the
nuclide is _____ radioactive - CORRECT ANSWER-Naturally
Identify one aspect associated w/ radioactive decay which most identifies a radionuclide -
CORRECT ANSWER-Rate of decay
Alpha particle - CORRECT ANSWER-A heavy particulate radiation consisting of 2 protons & 2
neutrons & a charge of +2
A beta particle transfers energy to the matter through which it is passing. The beta particle causes
an electron to be raised from one orbit to a higher energy state within the atom. The atom remain
neutrally charged. This is an example of: - CORRECT ANSWER-The excitation mechanism of
energy transfer
An alpha particle interacts w/ the atoms of the matter through which it is passing & transfers
energy to it. These electron field interactions can remove an electron from an orbit of a neutral
atom, forming charged particles by the passage of radiation through the media. This is an
example of: - CORRECT ANSWER-The ionization mechanism of energy transfer
Which of the following is a direct result of a neutron capture? - CORRECT ANSWER-Elastic
scattering
