Worksheet: X-Rays in Medicine

In this worksheet, we will practice describing the properties of x-rays and how they are used in medicine.

Q1:

Do the X-rays used in X-ray therapy have more energy, less energy, or the same energy as those used in X-ray imaging?

  • ALess energy
  • BMore energy
  • CThe same energy

Q2:

Which type of electromagnetic radiation has a shorter wavelength: gamma rays or X-rays?

  • AX-rays
  • BGamma rays

Q3:

Do the X-rays used in X-ray therapy have a higher frequency, a lower frequency, or the same frequency as those used in X-ray imaging?

  • AThe same frequency
  • BA lower frequency
  • CA higher frequency

Q4:

Which of the following statements explains why X-ray therapy uses X-rays with a higher frequency than those used in X-ray imaging?

  • AIt is less expensive to produce higher-frequency X-rays. Because X-ray therapy involves prolonged exposure to X-rays, using higher-frequency X-rays makes X-ray therapy much cheaper.
  • BHigher-frequency X-rays are less ionizing than lower-frequency X-rays. Therefore, prolonged exposure to X-rays as part of X-ray therapy is less dangerous.
  • CIt is easier to produce collimated beams of higher-frequency X-rays than of lower-frequency X-rays. This makes higher-frequency X-rays more suitable for X-ray therapy, as they can be targeted toward a specific part of the body.
  • DHigher-frequency X-rays are more ionizing than lower-frequency X-rays. Therefore, higher-frequency X-rays are more likely to kill cancerous cells.

Q5:

Which of the following is a unit of absorbed radiation dose?

  • AGray (Gy)
  • BBecquerel (Bq)
  • CRutherford (Rd)
  • DHertz (Hz)
  • ECurie (Ci)

Q6:

Which type of electromagnetic radiation has a shorter wavelength: ultraviolet light or X-rays?

  • AUltraviolet light
  • BX-rays

Q7:

Which of the following is a unit of effective radiation dose?

  • ABecquerel (Bq)
  • BSievert (Sv)
  • CRutherford (Rd)
  • DCurie (Ci)
  • EJoule (J)

Q8:

Which of the following is equivalent to 1 Gy?

  • A1 kg−1
  • B1 J/kg
  • C1 J/kg
  • D1 J/s
  • E1 J

Q9:

The figure shows an X-ray of a hand. Which of the labeled points on the figure shows where most of the X-rays were blocked?

  • APoint A
  • BPoint B
  • CPoint D
  • DPoint C

Q10:

Which of the following is equivalent to 1 Sv?

  • A1 kg−1
  • B1 J
  • C1 J/kg
  • D1 J/s
  • E1 J⋅kg

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.