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    Bridge: Online Ocean Science Education Resource Center
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    Water, whether fresh or salty, serves as one of the best electrical conductors on the planet. Does salt effect its conductivity? In this activity, learners will explore the effects of salts in the...

    free Ages 14 - 18 1 to 2 hours
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    Make
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    In this activity, learners create a "Jam Jar Jet" based on Francois Reynst's discovery of a pulsejet engine, which uses one opening for both air intake and exhaust. Learners will be...

    $10 - $20 per student Ages 14 - adult 2 to 4 hours
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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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    Oregon Museum of Science and Industry
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    Learners make a simple battery out of "sandwiches" of aluminum foil, pennies, and a salt water-soaked paper towel. They detect the electricity the battery makes by listening to it on a...

    $1 - $5 per group Ages 8 - 14 5 to 10 minutes
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    Oregon Museum of Science and Industry
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    This is a series of demonstrations about different electrical and magnetic phenomena. Some require highly specialized equipment like a Wimshurst machine, while others involve very simple equipment...

    Over $20 per group Ages 11 - 18 45 to 60 minutes