Students will be able to:
use information from videos from the internet, supplementary texts, and classroom discussions to
-observe and infer relationships between UV light and radiation.
-analyze the effect of UV light and radiation on humans.
-describe the ways human beings protect themselves from hazardous weather and conditions.
-evaluate the effects of the loss of ozone on the environments of the earth.
The do now was a quick write: What is ozone/ How does it relate to the greenhouse effect?
All students took notes about the ozone and greenhouse effects.
The ozone layer forms a thin shield high up in the sky. It protects life on Earth from the sun's ultraviolet (UV).
Recently, chlorofluorocarbons (CFCs) were used a lot in industry and elsewhere to keep things cold and to make foam and soaps. Strong winds carry CFCs up into the stratosphere where UV radiation breaks them apart, releasing chlorine atoms. Each chlorine atom can attack and break apart (destroy) as many as 100,000 ozone molecules during the time it is in the stratosphere. The chlorine from CFCs reduces (depletes) the amount of ozone in the stratosphere.
Other ozone-eating chemicals are pesticides such as methyl bromide, halons used in fire extinguishers, and methyl chloroform used in businesses.
Students are to update their notebooks, and be sure to complete the science fair plan.
