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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 mainly due to health concerns. X-rays can be harmful to health as they can damage cells and potentially cause cancer or mutations. The use of X-rays in hospitals is essential for diagnosing medical conditions, and the health benefits of proper medical care outweigh the risks associated with X-ray exposure.
Step 2
Explain how they are protected from the X-rays.
Answer
Security personnel near the X-ray machine are protected through the use of lead shielding or metal casings, which absorb X-rays and prevent exposure. Additionally, they work at a distance from the machine to minimize radiation exposure, keeping them out of the range where X-rays could be harmful.