Air current
From Infogalactic: the planetary knowledge core
(Redirected from Upcurrent)
Lua error in package.lua at line 80: module 'strict' not found. Air currents, or thermals, can be caused by differences in temperature, pressure, or impurity concentration. Temperature differences can cause air currents because warmer air is less dense than cooler air, causing the warmer air to appear "lighter." Thus, if the warm air is under the cool air, air currents will form as they exchange places. Air currents are caused because of the uneven heating of Earth's surface.
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