Because ultraviolet light travels in waves, it can sometimes be blocked as it travels from the Sun to Earth. What are some factors that might affect how much UV light gets to us, and why are some of these useful?

No measurable UVC from solar radiation reaches the Earth's surface, because ozone, molecular oxygen and water vapor in the upper atmosphere completely absorb the shortest UV wavelengths.

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sp10925 sp10925 · Answer 2 · 2022-05-11T10:08:24+02:00

UV rays are blocked by the different layers of atmosphere. The factors responsible for this blockage is the ozone layer in the top layer of atmosphere, water vapor, oxygen, and carbon dioxide molecules.

What is UV?

The Sun emits UV rays, but it is absorbed in the ozone layer of the atmosphere before reaching the earth. This results in the blockage of UV rays from the sun that does not affect people.

The factors responsible for this blockage is the ozone layer in the top layer of atmosphere, water vapor, oxygen, and carbon dioxide molecules.

Learn more about UV.

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