1. Which of the following is true about X-rays? A. They use sound waves to create images B. They can pass through bones but not soft tissues C. They are only used for diagnosing dental problems D. They have no known side effects Answer: B. They can pass through bones but not soft tissues Rationale: X-rays are a form of electromagnetic radiation that can penetrate through tissues with different densities. Bones are more dense than soft tissues, which is why X-rays can pass through bones but not other tissues. 2. Which of the following is a common use of X-rays in healthcare? A. Monitoring fetal development during pregnancy B. Treating cancer C. Detecting fractures in bones D. Assessing blood flow in the heart Answer: C. Detecting fractures in bones Rationale: X-rays are commonly used to detect fractures in bones by creating images that show breaks or disruptions in bone structure. 3. How are X-rays produced in a clinical setting? A. By passing a beam of electrons through a magnetic field B. By bombarding a target material with high-energy particles C. By using radioactive isotopes D. By generating ultrasonic waves Answer: B. By bombarding a target material with high-energy particles Rationale: X-rays are produced by directing a beam of electrons at a target material, such as tungsten, which causes the electrons to collide with the atoms in the target and produce X-rays. 4. Which of the following factors can affect the quality of an X-ray image? A. The patient's age