Acid Rain Webquest ANSWERS.doc - Name _ Unit 3 Air... Define acid rain. Rain that has been made acidic by air pollutants Rain that has been made acidic by air pollutants 2. Explain wet and dry deposition. Wet- sleet, rain, snow or fog Dry- gases and dust particles that become acidic Wet - sleet , rain , snow or fog Dry - gases and dust particles that become acidic 3.