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WHY?
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- As air is warmed, the particles (molecules) it is made up of spread out. This makes the
air lighter (less dense), and it rises. The rising warm air above the candle filled the bag
and caused it to rise, also.
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ASSESSMENT: Can the student communicate
what they observed?
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The student is able to communicate that the hair dryer warmed the air inside the
tissue balloon making the air lighter. The lighter air rose and filled the balloon causing
it to rise, also.
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The student is able to communicate that the warm air caused the bag to rise.
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The student is able to communicate that the candle made the bag rise.
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The student is able to communicate that the bag rose.
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Last modified: Tue Mar 24 18:51:50 PST 1998
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