Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
UV radiation is a type of electromagnetic radiation emitted by the sun. It has shorter wavelengths than visible light and can cause harmful effects on living organisms, including skin damage and increased risk of cancer.
Related terms
Ozone layer: A region in the Earth's stratosphere that contains a high concentration of ozone molecules. It acts as a shield, absorbing most of the sun's harmful UV radiation.
Sunscreen: A lotion or cream applied to the skin to protect it from the damaging effects of UV radiation.
Melanoma: The most dangerous type of skin cancer, often caused by excessive exposure to UV radiation.