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    NOAA
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    In this activity, learners use chocolate to explore how the Sun transfers heat to the Earth through radiation. Learners compare the melting rate between chocolate left in the sunshine and chocolate...

    1 cent - $1 per group Ages 6 - 14 10 to 30 minutes
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    American Chemical Society
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    In this activity on page 13 of the PDF, use a special plastic card that has been painted with a chemical that changes color when it is in UV light. Examine how the more UV rays there are, the...

    $5 - $10 per student Ages 6 - 14 10 to 30 minutes
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    New York Hall of Science
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    This is a fun activity about the power of the Sun and the importance of using sunscreen to protect your sensitive skin from its rays. Learners will hang apple rings in the Sun and monitor changes...

    $1 - $5 per student Ages 4 - 11 4 to 24 hours
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    NISE Network
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    In this activity, learners find out why some mineral sunblock rubs in clear. Learners compare nano and non-nano sunblocks and discover how particle size affects visibility.

    $5 - $10 per group Ages 4 - adult 5 to 10 minutes
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    NASA
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    In this outdoor activity, learners explore UV rays from the Sun and ways to protect against these potentially harmful rays. Learners use "detectors" (UV beads) at five different stations,...

    $10 - $20 per group Ages 4 - 18 10 to 30 minutes
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    NISE Network
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    This is a hands-on activity exploring how nanoscale particles are used in mineral sunblocks to increase their transparency. Learners compare nano and non-nano sunblocks to a visual representation...

    $10 - $20 per group Ages 6 - adult 10 to 30 minutes