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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 cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...

An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...

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

Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...

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

The names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

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