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    California Academy of Sciences
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    In this activity, learners visualize the differences in water density and relate this to the potential consequences of increased glacial melting. This activity can be conducted as a demonstration...

    $5 - $10 per group Ages 8 - 14 2 to 4 hours
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Learners cover a bottle with a balloon. When they immerse the bottle in warm water, the balloon inflates. When they immerse the bottle in a bowl of ice, the balloon deflates. Learners understand...

    1 cent - $1 per group Ages 8 - 14 5 to 10 minutes
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    Institute of Physics
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    In this demonstration, learners will be "wowed" as three matches burn to form a triangular pyramid shape and "magically" rise off the table. Learners will observe as the matches...

    1 cent - $1 per group Ages 4 - adult Under 5 minutes
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    The Exploratorium
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    This highly visual model demonstrates the atomic theory of matter which states that a gas is made up of tiny particles of atoms that are in constant motion, smashing into each other. Balls,...

    $10 - $20 per group Ages 8 - 14 10 to 30 minutes
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Learners color and cut out a spiral-shaped snake. When they hang their snake over a radiator, the snake spins. This is because the heated air is less dense and rises, pushing against the snake and...

    free Ages 8 - 14 10 to 30 minutes
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    Oregon Museum of Science and Industry
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    Learners observe working lava lamps to understand how they work (included in PDF link). Learners discover that liquids may not be miscible, or won't mix together, because of differences in...

    $10 - $20 per group Ages 8 - adult 10 to 30 minutes
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    Make
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    In this chemistry meets cooking activity, learners make carbonated, vanilla ice cream using dry ice and denatured ethanol, which are both inexpensive and accessible. This process to make ice cream...

    Over $20 per group Ages 8 - adult 45 to 60 minutes
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    Lunar and Planetary Institute
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    In this activity, learners use a toaster to generate wind and compare the appliance's heat source to Jupiter's own hot interior. Learners discover that convection drives wind on Jupiter...

    1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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    Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulder
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    Learners see convection currents in action in this highly visual demonstration. Sealed bags of colored hot or cold water are immersed in tanks of water. When the bags are punctured with pinholes,...

    1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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    Lunar and Planetary Institute
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    In this activity, learners observe the water cycle in action! Water vapor in a tumbler condenses on chilled aluminum foil — producing the liquid form of water familiar to us as rain and dew....

    1 cent - $1 per group Ages 8 - 14 10 to 30 minutes

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