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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...

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...

Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...

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

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

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

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

Meteorology is the scientific study of the atmosphere and weather processes. It involves observing, analyzing, and forecasting...

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

Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....