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from | Encarta |  |
Scientific Balloon |
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| Scientists prepare to launch an expandable weather balloon in Antarctica to gather information about upper level wind speeds and directions. As the balloon, which is filled with a light gas such as helium, rises upward, the gas expands and enlarges the balloon. At some point, the balloon bursts and a parachute brings the weather instruments back down to the earth. | ||||||
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| Robert Harding Picture Library | ||||||
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| Appears in these articles: | ||||||
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| Ballooning; Meteorology | ||||||
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