Acid rain Acid rain refers to any precipitation, rain or snow, that's more acid than ordinary precipitation because of pollutants. There doesn't seem to be a whole lot of educational information about acid rain available on the World Wide Web. I'll be glad to add these links to our site. The site is meant primarily for ages 4-14. These links include ones to the International Panel on Climate Change, the international group of scientists that is making an extensive study of the issue.
Photos enhance the graphics and text that show the different kinds of clouds and how they form.
The Department of Atmospheric Sciences at the University of Illinois at Urbana-Champagne has an online Cloud Catalog with excellent pictures and useful information. This site has a glossary explaining many topics in the formation of clouds, often using diagrams and also provides a section on suggested activities in the classroom. The Cloud Boutique from Plymouth State College is another online gallery of clouds available on the Web. Earth science, general The Denver Earth Science Project is an earth science curriculum development and training project at the Colorado School of Mines. This web site offers a series of educational modules covering such topics as dinosaurs, oil and gas exploration and energy geared toward students in grades 4-12.