Glossary
acid: a substance that neutralizes bases, conducts electricity in solution, and has a pH that is less than 7(neutral) in solution
acid deposition: acid-forming pollutants that fall to Earth as wet deposition (such as rain, hail, drizzle, fog, and snow) and as dry deposition (such as dust and other particulate matter)
acid precipitation: any form of natural precipitation that has an unusually high acidity
base: a substance that neutralizes acids, conducts electricity in solution, and has a pH that is greater than 7(neutral) in solution
global warming: the increase in the average temperature of Earth’s atmosphere
greenhouse gases: gases in the atmosphere that trap heat close to Earth’s surface, contributing to the greenhouse effect
ground water: water from precipitation that seeps underground and collects in aquifers
hard water: water that contains dissolved calcium,magnesium, and iron ions
surface water: water in lakes,ponds, rivers, and streams
acid deposition: acid-forming pollutants that fall to Earth as wet deposition (such as rain, hail, drizzle, fog, and snow) and as dry deposition (such as dust and other particulate matter)
acid precipitation: any form of natural precipitation that has an unusually high acidity
base: a substance that neutralizes acids, conducts electricity in solution, and has a pH that is greater than 7(neutral) in solution
global warming: the increase in the average temperature of Earth’s atmosphere
greenhouse gases: gases in the atmosphere that trap heat close to Earth’s surface, contributing to the greenhouse effect
ground water: water from precipitation that seeps underground and collects in aquifers
hard water: water that contains dissolved calcium,magnesium, and iron ions
surface water: water in lakes,ponds, rivers, and streams