Social Sciences and History / Unit 10 SSH 0937 short lesson, about 20 seconds
Weather Is Today; Climate Is Thirty Years
Captions available
The idea
Weather is the current state of the atmosphere at a place and time; climate is the statistical average of weather for a location over thirty years or more, NOAA's definition. Weather changes by the minute; climate takes decades, a system of ocean, air, rock, water and life.
In practice
Cretaceous warmth, no polar ice.
Where people slip
Historic climates tracked greenhouse gases, the anchor says.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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