Types of Pollution Information, Sorting Cards & Control Charts - Identify, sort, and classify 6 types of pollution. Check the classification using the control charts.This set includes the following 6 types of pollution: noise, air, water, land, thermal, and radioactive.Includes:6 category cards6 information cards36 labeled picture cards (6 for each type)2 control chartsPicture cards are approx. 4" x 3¼". The control chart prints on 8½" x 11" paper.