Physics - P3 - AQA - GCSE - X-rays

Physics - P3 - AQA - GCSE - X-rays

1. High frequency

   • Second furthest right on the electromagnetic spectrum
     • Furthest right are gamma rays

2. Short wavelength

3. Electromagnetic waves

4. Pass through healthy tissue but are absorbed by denser materials (bone, metals, etc.)

   • This means X-ray photographs can be taken where the X-rays pass through the body.
     • Can be used to diagnose medical conditions

5. CT Scans

   • Multiple two-dimensional scans are taken as shown above from different angles and then put together to make a three-dimensional image.

6. High doses of X-rays can cause living cells to die.

   • Can be used to treat cancers if focused carefully and at the right dosage

7. Radiographer wear lead aprons/stand behind lead screens/leave the rooms whilst scans occur.

   • Exposure time to X-rays is kept to a minimum to reduce damage to healthy cells.
   • Lead absorber plates stop X-rays reaching other parts of the body

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