What does the UV index indicate?

• A. Temperature of the ocean
• B. Humidity levels in the air
• C. Strength of ultraviolet rays
• D. Wind speed across regions

Answer: (C)

The UV index is a measurement that indicates the strength of ultraviolet (UV) radiation from the sun at a specific time and location. It is particularly important for public health because it helps people understand their risk of overexposure to UV radiation, which can lead to skin damage, sunburn, and increased risk of skin cancer. The scale typically ranges from low to very high levels, guiding individuals on when to take precautions, such as seeking shade, wearing sunscreen, or using protective clothing.

The other options do not relate to the UV index: ocean temperature, humidity levels, and wind speed are all meteorological factors but they do not reflect the intensity or potential harmful effects of UV radiation on human health.