Can a spaceship save on fuel by sailing in space? This riddle asks students how such a feat could be accomplished. A paragraph and video clip on a clue page sum up two girls' investigation into one possible solution. The girls knew that air is absent in space, so they set out to see if a fan would move a sail in a vacuum chamber. When students select the correct answer from the riddle's three answer choices, a brief video plays that describes how sunlight can exert enough force to propel spacecraft equipped with solar sails (thin, gigantic mirrors). The video explains why this technique can work in space but not on Earth. A text version of the riddle is available.


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    Space technology,Informal Education,Middle School,NSDL,Upper Elementary,oai:nsdl.org:2200/20120114184413431T,Technology,Grade 8,Grade 5,Engineering,NSDL_SetSpec_1007936,Transportation technology,Forces and motion,Science and technology,Space Science,Elementary School,Physical science,Chemistry,Physics,Grade 6,Grade 7



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