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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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    Learners work in pairs to design, construct, and test a device that exhibits positive, neutral, and negative buoyancy. They test a number of different objects in water to see if they sink or float....

    $1 - $5 per group Ages 8 - 11 45 to 60 minutes
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    Oregon Museum of Science and Industry
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    In this activity, learners will model the mechanical weathering and erosion of rocks in a stream or river. Learners put "stones" made of plaster of paris into a plastic container filled...

    $1 - $5 per group Ages 8 - 11 10 to 30 minutes
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    Oregon Museum of Science and Industry
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    In this activity, learners will design a way to identify a powder found at a crime scene by comparing it with known powders, with the goal of solving a crime. Learners will describe the various...

    $10 - $20 per group Ages 8 - 11 45 to 60 minutes
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    Oregon Museum of Science and Industry
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    In this activity, learners electrically plate zinc onto brass objects. They connect a brass object to a black wire on the negative pole of a 6 Volt battery, and a piece of zinc to a red wire on the...

    1 cent - $1 per group Ages 11 - adult Under 5 minutes
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    Oregon Museum of Science and Industry
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    Learners explore how recyclers take advantage of the different properties of materials, such as magnetism and density, to separate them from a mixture. They use a magnet and floatation to separate...

    1 cent - $1 per group Ages 4 - 14 Under 5 minutes
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    Oregon Museum of Science and Industry
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    Learners place their hands on different metals and use an ammeter to monitor the flow of electricity from one metal to another. They become part of a complete circuit, allowing electrons to flow...

    $10 - $20 per group Ages 8 - 18 5 to 10 minutes