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Questions and Answers
Which unit is used to measure the amount of ionizing radiation released by a material?
Which unit is used to measure the amount of ionizing radiation released by a material?
- Curie (Ci) (correct)
- Roentgen (R)
- Coulomb/kilogram (C/kg)
- Becquerel (Bq)
What does exposure describe?
What does exposure describe?
- The amount of radiation absorbed by the target
- The amount of ionizing radiation released by a material
- The amount of radiation a
- The amount of radiation traveling through the air (correct)
What are the units of measure for exposure?
What are the units of measure for exposure?
- Coulomb/kilogram (C/kg) and Curie (Ci)
- Curie (Ci) and Becquerel (Bq)
- Roentgen (R) and Becquerel (Bq)
- Roentgen (R) and Coulomb/kilogram (C/kg) (correct)
Which unit is used to measure radioactivity in terms of how many atoms in the material decay in a given time period?
Which unit is used to measure radioactivity in terms of how many atoms in the material decay in a given time period?
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What does absorbed dose describe?
What does absorbed dose describe?
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Study Notes
Measurement of Ionizing Radiation
- The unit used to measure the amount of ionizing radiation released by a material is the Gray (Gy).
Exposure
- Exposure describes the radiation energy that ionizes air and is a measure of the amount of radiation present in a specific environment.
Units of Measure for Exposure
- Common units for measuring exposure include Roentgen (R), which quantifies the ionization produced in air.
Measurement of Radioactivity
- The unit used to measure radioactivity, specifically the decay of atoms in a material over time, is the Becquerel (Bq), where one Bq equals one decay per second.
Absorbed Dose
- Absorbed dose describes the amount of energy deposited by radiation per unit mass of tissue, typically measured in Gray (Gy), where one Gy corresponds to one joule of energy absorbed by one kilogram of matter.
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