Friday, April 7, 2017

UVA and UVB Rays and Sun Screen

Essential Questions:
What are UV Rays?
How do UV Rays effect your body?
Click on the above link and make a copy  

UVA rays cause skin aging and wrinkling and contribute to skin cancer, such as melanoma. Because UVA rays pass effortlessly through the ozone layer (the protective layer of atmosphere, or shield, surrounding the earth), they make up the majority of our sun exposure. Beware of tanning beds because they use UVA rays as well as UVB rays. 

UVB rays are also dangerous, causing sunburns, cataracts (clouding of the eye lens), and effects on the immune system. They also contribute to skin cancer. Melanoma, the most dangerous form of skin cancer, is thought to be associated with severe UVB sunburns that occur before the age of 20.
-summarized from Kids Health

UVA and UVB Sunscreens

Sunscreen Information

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