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thermal
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Quizzes
Lightning over a farm field. Weather electricity thunderstorm light energy tree
Facts You Should Know: Weather Quiz
Umbrella colored like a rainbow sticking out above a sea of black umbrellas while it rains. (storm, weather)
Weather Words Vocabulary Quiz
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Flower. Fruit tree. Cherry. Cherry tree. Cherry blossom. Spring. Close-up of cherry blossoms in bloom.
The Perils of an Early Spring
September 11, 2005, ozone thinning over antarctica reached its maximum extent for the year.
Is the Ozone Layer Finally Healing Itself?
Lightning over the outskirts of Oradea, Rom., during the thunderstorm of August 17, 2005.
16 Questions About Earth’s Atmsophere and Weather Answered
Lightning over a farm field. Weather electricity thunderstorm light energy tree
Can Lightning Strike the Same Place Twice?
Hot-air balloon against a sky (clouds, hot air ballooning, recreation)
Why Is the Sky Blue?
Discover
Leonardo da Vinci (1452-1519), Italian Renaissance painter from Florence. Engraving by Cosomo Colombini (d. 1812) after a Leonardo self portrait. Ca. 1500.
10 Famous Artworks by Leonardo da Vinci
Los Angeles Police Department wanted flyer on Elizabeth Short, aka the "Black Dahlia," who was brutally murdered in January 1947. The FBI supported the Los Angeles Police Department in the case, including by identifying Short through her fingerprints that
America’s 5 Most Notorious Cold Cases (Including One You May Have Thought Was Already Solved)
Super Typhoon Noru over the western tropical Pacific Ocean as observed by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA Aqua satellite July 31 2017
What Is the Difference Between a Typhoon and a Super Typhoon?
A human Inuit skull in a stone chambered cairn in Ilulissat in Greenland. These ancient graves are pre christian and are at least 2000
14 Tough Questions Answered
Title: Senate Square, St. Petersburg, December 14, 1825: repression of the troop mutiny - watercolor by Carl Ivanovitch Kollman, 1825 depicts Decembrist uprising clashing with cavalry, with spectators watching. (new style December 26, 1825) Europe. Saint
8 of the Largest Empires in History
The Cheshire Cat is a fictional cat from Lewis Carroll's Alice's Adventures in Wonderland. (Alice in Wonderland)
11 Banned Books Through Time
Rural Irish landscape, Sligo, Ireland.
Why Is Ireland Two Countries?

thermal

air current
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Article History

thermal, current of air rising from a locally hot patch of ground. See updraft and downdraft.