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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

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

Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...

A type of cloud consisting mostly of small particles such as ice particles.

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

Weather is the day-to-day meteorological conditions that happen in our atmosphere. Weather can change within minutes, which...

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

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...