Question

ultraviolet light comes from the sun and can sometimes cause serious health issues such as skin cancer. why does ultraviolet light have this effect on our bodies, but visible light does not?

a ultraviolet light moves faster than visible light

b ultraviolet light is attracted to our skin

c ultraviolet light has less energy than visible light

d ultraviolet light has more energy than visible light

Explanation:

All electromagnetic waves, including ultraviolet and visible light, travel at the speed of light in a vacuum, so option a is incorrect. There is no such thing as light being "attracted" to skin in the context of this question, so option b is wrong. The energy of electromagnetic - radiation is inversely proportional to its wavelength. Ultraviolet light has a shorter wavelength than visible light. Shorter - wavelength radiation has more energy per photon. So ultraviolet light has more energy than visible light and can cause damage to cells in our bodies like skin cells, leading to health issues such as skin cancer.

Answer:

D. Ultraviolet light has more energy than visible light