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Why is ocean water sometimes the warmest when the average daily air temperature starts to drop? In this activity, learners explore the differing heat capacities of water and air using real data.

1 cent - $1 per student Ages 11 - 18 45 to 60 minutes
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This lesson challenges groups of learners to design and construct a wind generator with the most electrical output.

$10 - $20 per group Ages 11 - 14 2 to 4 hours
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In this activity, learners graph 48 hourly air temperatures from a local weather observation site and observe the diurnal temperature variations.

free Ages 8 - 14 30 to 45 minutes
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This three-part activity shows learners how to build three meteorology tools: a wind vane, a rain gauge, and a barometer.

$1 - $5 per student Ages 8 - 14 1 to 7 days