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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 cloud of irregular appearance, composed of irregular cloud fragments.

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...

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

Snow that rises to 8 feet or higher.

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.