Radiation Units of Measurement (RTBC) Questions and Answers Already Passed

Radiation Units of Measurement (RTBC) Questions and Answers Already Passed What is the SI unit of radiation exposure? The SI unit of radiation exposure is the coulomb per kilogram (C/kg). What does the unit "gray" (Gy) measure in radiation? The gray (Gy) measures the absorbed dose of radiation, representing the amount of energy deposited in a tissue. What is the unit of equivalent dose in radiation protection? The unit of equivalent dose is the sievert (Sv). What does the sievert (Sv) account for in radiation exposure? The sievert (Sv) accounts for the biological effects of radiation, considering the type of radiation and the sensitivity of the tissues. What is the unit of activity in radiation measurement? 2 The unit of activity is the becquerel (Bq), representing the number of radioactive decays per second. How does the unit "rad" relate to the absorbed dose? The rad (radiation absorbed dose) is an older unit of absorbed dose, where 1 rad equals 0.01 joules of energy deposited per kilogram of tissue. What is the difference between the gray and the rad? 1 gray (Gy) equals 100 rads, with both measuring the amount of radiation absorbed by a material. What is the unit used to measure the exposure of x-rays and gamma rays in air? The unit used to measure the exposure of x-rays and gamma rays in air is the roentgen (R). What is the relationship between the roentgen (R) and the coulomb per kilogram (C/kg)? 1 roentgen (R) is equal to 2.58 × 10^-4 coulombs per kilogram (C/kg). What does the term "dose equivalent" refer to in radiation protection? 3 Dose equivalent refers to the amount of radiation absorbed by the body, adjusted for the type of radiation and tissue sensitivity, measured in sieverts (Sv). What is the role of the quality factor (QF) in radiation measurement? The quality factor (QF) adjusts the absorbed dose to account for the biological effects of different types of radiation. What does the unit "curie" (Ci) measure in radiation? The curie (Ci) measures the activity of a radioactive substance, with 1 curie equal to 3.7 × 10^10 disintegrations per second. What is the purpose of the "millisievert" (mSv) unit in radiation protection? The millisievert (mSv) is used to measure lower doses of radiation exposure, where 1 mSv is one-thousandth of a sievert (Sv). What does the "exposure" term refer to in radiation safety? Exposure refers to the amount of ionizing radiation that reaches a specific area, typically measured in roentgens (R) or coulombs per kilogram (C/kg). 4 What is the SI unit for measuring radiation dose rate? The SI unit for measuring radiation dose rate is the sievert per hour (Sv/h) or gray per hour (Gy/h). How is the rem (roentgen equivalent man) related to the sievert? 1 rem equals 0.01 sieverts, and it was an