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What is Acid Rain?

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

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Glossary

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...

An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.

Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...

A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...