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This demonstration/activity helps learners understand why higher elevations are not always warm simply because "hot air rises." Learners use a tire pump to increase the pressure and temperature inside

$1 - $5 per group Ages 8 - 18 10 to 30 minutes
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In this activity, learners make an astrolabe, a device used for measuring altitude, including the height of objects in the sky.

$1 - $5 per student Ages 6 - 14 5 to 10 minutes