RAD PROTECTION WEEK 2 EXAMS
QUESTIONS AND ANSWERS
Electromagnetic radiation travels or propagates through space in the form of a wave
but can interact with matter as a particle of energy called a photon. This dual nature
is referred to as - Answer- wave-particle duality
Terrestrial radiation includes which of the following sources? - Answer- Long-lived
radioactive elements such as uranium-238, radium-226, and thorium-232 that are
present in variable quantities in the crust of the earth
Cosmic radiation occurs in which two forms? - Answer- Solar and galactic
Which of the following helps shield the global population from exposure to
essentially all high-energy, bombarding cosmic rays? - Answer- Earth's
atmosphere and magnetic field
Which of the following are forms of electromagnetic radiation?
1. Microwaves
2. Visible light
3. X-rays
4. Gamma rays
5. Ultraviolet radiation - Answer- 1,2,3,4,5
What is the most common unit of measure of equivalent dose? - Answer-
millisievert
In the electromagnetic spectrum, higher frequencies are associated with - Answer-
shorter wavelengths and higher energies
Which of the following radiation quantities use the same unit of measure? - Answer-
effective dose and equivalent dose
What is the total average annual radiation equivalent dose for estimated levels of
radiation exposure for humans? - Answer- 5.5 mSv
which source of ionizing radiation, remains fairly constant from year to year? -
Answer- Natural
Particles associated with electromagnetic radiation that have neither mass nor
electric charge and travel at the speed of light are - Answer- x-ray photons.
QUESTIONS AND ANSWERS
Electromagnetic radiation travels or propagates through space in the form of a wave
but can interact with matter as a particle of energy called a photon. This dual nature
is referred to as - Answer- wave-particle duality
Terrestrial radiation includes which of the following sources? - Answer- Long-lived
radioactive elements such as uranium-238, radium-226, and thorium-232 that are
present in variable quantities in the crust of the earth
Cosmic radiation occurs in which two forms? - Answer- Solar and galactic
Which of the following helps shield the global population from exposure to
essentially all high-energy, bombarding cosmic rays? - Answer- Earth's
atmosphere and magnetic field
Which of the following are forms of electromagnetic radiation?
1. Microwaves
2. Visible light
3. X-rays
4. Gamma rays
5. Ultraviolet radiation - Answer- 1,2,3,4,5
What is the most common unit of measure of equivalent dose? - Answer-
millisievert
In the electromagnetic spectrum, higher frequencies are associated with - Answer-
shorter wavelengths and higher energies
Which of the following radiation quantities use the same unit of measure? - Answer-
effective dose and equivalent dose
What is the total average annual radiation equivalent dose for estimated levels of
radiation exposure for humans? - Answer- 5.5 mSv
which source of ionizing radiation, remains fairly constant from year to year? -
Answer- Natural
Particles associated with electromagnetic radiation that have neither mass nor
electric charge and travel at the speed of light are - Answer- x-ray photons.
