We will discuss how the sun helps us and how it could possibly harm us with its powerful ray. Students will learn that the ozone layers are like sunglasses for the earth, a very valuable pair that cannot be replaced. Students will be encouraged to examine different factors that are unfortunately contributing to acid rain. Ex. vehicles, factories, household items, etc. We will spray some of the chemicals on the model of the ozone layers which will be made of tissue paper to signify its fragileness.
Students can discuss in brief the danger involved with the damaged layers.
Ex. skin cancer, eyes. In a transparent plastic cup each group will build several layers of the earth from sand, soil, clay and rocks. They will each have four cups of water. Now they will do several tests with the water. Each is to be mixed with a household chemical.