Edexcel IGCSE Physics 3.13 Risks of Em Radiation Questions

Excess exposure can harm the body in different ways: microwaves heat internal tissue, infrared causes skin burns, and ultraviolet damages cells and eyes. Reduce UV exposure with shielding, clothing or sunscreen.

Exam points

Explain that microwaves can cause internal heating of body tissue, especially when microwave ovens are damaged.
Identify excessive infrared exposure as a cause of skin or eye burns.
Explain that ultraviolet radiation can damage cells and eyes, leading to effects such as mutation, skin cancer or blindness.
Describe precautions that reduce ultraviolet exposure, such as sunscreen, clothing, shielding or limiting time exposed.

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The photograph shows infrared heating lamps being used to harden fresh paint on a car.

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Give a harmful effect of infrared waves.

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Edexcel IGCSE Physics 3.13 Risks of Em Radiation Questions question 1