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The photograph shows the security check-in at an airport - Edexcel - GCSE Physics - Question 3 - 2014 - Paper 1
Question 3
The photograph shows the security check-in at an airport. An X-ray machine is used to scan luggage for dangerous items. A metal detector is used to check people for... show full transcript
Worked Solution & Example Answer:The photograph shows the security check-in at an airport - Edexcel - GCSE Physics - Question 3 - 2014 - Paper 1
Step 1
Suggest why people are not scanned with X-rays in an airport but have X-rays in a hospital.
Answer
People are not scanned with X-rays in an airport because X-rays can be harmful to health by damaging cells or even causing cancer. In contrast, the use of X-rays in a hospital is essential for diagnosing health issues, and the benefits of receiving medical treatment outweigh the risks associated with exposure.
Step 2
Explain how they are protected from the X-rays.
Answer
The security personnel are protected from X-rays through the use of lead shielding or casing that absorbs X-rays, reducing their exposure. Additionally, they are positioned at a safe distance from the X-ray machine, minimizing potential radiation risks.