1. Learning Objective
To be able to: Describe the effects of exposure to electromagnetic waves Key Words: Sieverts, tissue, radiation

2. Harmful effects of the EM Spectrum
Monday, 20 May 2019
Harmful effects of the EM Spectrum
Date and title in books. You need a pen, pencil & ruler.
Starter Activity – 5 minutes
Exam question

3. (F)
Target 1-9
Identify why waves from the EM spectrum can be damaging
(F/H)
Target 4-9
Describe the effects of X-rays, UV and gamma rays on the body
(H)
Target 5-9
Explain the short term and long term effects of exposure
Extension: Application of Knowledge
Target 8/9
Explain why dosimeters are used by radiographers
Learning Outcomes

4. Radiation Dose
The more radiation we are exposed to, the greater the effects.
Small doses are all around us, they cause us little harm.
We measure radiation dose in Sieverts (Sv).

5. UV - Effects of the body UV rays are used for tanning
What might the effects of too many UV rays on the body be?
Premature aging of the skin
Skin cancer

6. X-rays and Gamma Rays - Effects of the body
X-Rays and Gamma rays are ionising. This means they can change living cells
What might the effects of too many X-rays and gamma rays on the body be?
Mutations of genes
Cancer