[ 117 ] Earth and Space Science GED ® TEST SCIENCE FLASH REVIEW • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • The chart presents information on ultraviolet radiation. It is divided into wavelength ranges identified as UVA, UVB, and UVC. Radiation UVA UVB UVC Main human effect Aging Burning Wavelength 400 nm to 315 nm 315 nm to 280 nm 280 nm to 100 nm % reaching Earth 12 noon 95% 5% 0% % reaching Earth before 10 A.M. & after 2 P.M. 99% 1% 0% % reaching Earth (average) 97% 3% 0% NOTES creates vitamin D Deep Sea Level Sea Level Visible Light X-Ray UVC UVB UVA Stratosphere/Ozone 200–290nm 290–320nm 320–400nm With the chart and diagram, what can you determine about UVC waves?