X-Rays & Gamma Rays

This lesson covers:

  1. How X-rays are used in medical imaging
  2. The main uses of gamma rays

longest / shortest / highest / lowest


X-rays and gamma rays have the wavelengths and frequencies of all the electromagnetic waves.

shortest
highest

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2

X-rays are used to view the internal structure of objects.

Illustration showing X-rays passing through a bone and lungs, highlighting absorption and transmission.

How X-rays work


transmitted / emitted / absorbed / dense / soft / bones / lungs


  1. X-rays are fired at the patient
  2. X-rays are by materials which are very , like bones.
  3. X-rays are through materials which are not very dense, like and intestines.
  4. The X-rays that pass through are detected by a detector plate to form an X-ray image
absorbed
dense
transmitted
lungs

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4

Over the long term, the risk of overexposure to X-rays is higher for:

Hospital staff administering X-rays

Patients receiving X-rays

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Illustration showing gamma rays being used on a human body in a hospital setting.

In a hospital, gamma rays are used to:

(Select all that apply)

Treat cancer

Perform medical imaging

Heat rooms

Illuminate offices

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2

rays can be used to sterilise me equipment and food. The rays can kill microo without causing any other damage.

Gamma
dical
rganisms

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3

True or false? X-rays and gamma rays cannot damage our cells.

True

False

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1