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Not Right For WatchKnowLearn
Ages: 3 - 7
Observe Sunrise and Sunset
From, produced by WGBH
Night and day are determined by the Sun's presence in the sky. As Earth rotates, the portion of the planet that is illuminated by the Sun experiences day while the portion that faces away from the Sun experiences night. As observed from most location... [more]
Found by begamatt in SL.1.1b
October 31, 2010 at 08:07 PM
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Not Right For WatchKnowLearn
Ages: 3 - 8
Observe Water in Winter and Summer
From, produced by WGBH
On Earth, water can regularly be found in three different phases — liquid, solid, and gas — each of which has noticeably different properties. For example, a boat can glide through liquid water in summer, but it cannot do so when the water turns to s... [more]
Found by begamatt in SL.1.1b
October 31, 2010 at 08:20 PM
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