Radiation Safety Practice Exam

Which type of exposure is defined as occurring over an extended period of time?

1. Acute exposure

2. Chronic exposure

3. Intermittent exposure

4. Minimal exposure

The correct answer is: Chronic exposure

Chronic exposure is characterized by prolonged contact or exposure to a substance or radiation over an extended period. In the context of radiation safety, this type of exposure typically occurs at lower levels of radiation but is sustained over time, which can lead to cumulative effects on health. Understanding chronic exposure is crucial because it can affect individuals in various settings, particularly for workers in radiation-related industries or areas with environmental hazards. This persistent exposure can result in long-term health risks, such as the development of cancer or other radiation-induced conditions, which may not become apparent for many years. In contrast, acute exposure refers to a short, intense period of exposure that can cause immediate effects, while intermittent exposure involves exposure that occurs in repeated bursts but does not last for any extended duration. Minimal exposure indicates very low levels of radiation that would be unlikely to result in significant health risks. Thus, chronic exposure is the term that accurately captures the concept of prolonged exposure over time, distinguishing it from the other types mentioned.