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    Lunar and Planetary Institute
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    In this activity, learners model ancient lunar impacts using water balloons. By measuring the diameter of the crater area, learners discover that the Moon's largest impact basins were created...

    Over $20 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 drop impactors onto layers of graham crackers! The process models how impacts throughout the Moon's history have broken rocks down into a mixture of dust, rocks, and...

    $5 - $10 per group Ages 8 - 14 10 to 30 minutes
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    University of Nebraska State Museum
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    In this activity (on pages 36-39), learners make a model of a watershed out of paper, then run water down the mountain to simulate how rainfall and pollution affect watersheds. Learners are...

    $1 - $5 per group Ages 8 - 14 10 to 30 minutes
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    Lawrence Hall of Science
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    In this simulation activity, learners observe what can happen when ocean waves churn up water and oil from an oil spill. Learners fill a large bottle with water, blue coloring and hair conditioner ...

    1 cent - $1 per group Ages 6 - 14 10 to 30 minutes
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    Lawrence Hall of Science
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    In this simulation, learners explore how ocean currents spread all kinds of pollution—including oil spills, sewage, pesticides and factory waste—far beyond where the pollution originates. Learners...

    1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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    Colorado State University
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    In this activity, learners simulate the behavior of the atmosphere. Learners working in groups of four will represent "cells" of the model (Earth, lower atmosphere, upper atmosphere, and...

    free Ages 8 - 14 10 to 30 minutes
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    Colorado State University
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    In this activity, learners simulate the energy transfer between the earth and space by using the light from a desk lamp desk lamp with an incandescent bulb and a stack of glass plates. The stack of...

    $1 - $5 per student Ages 8 - 14 10 to 30 minutes
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    Astronomical Society of the Pacific
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    This fun and simple hands-on astronomy activity demonstrates the shadow of the Earth as it rises as a dark blue shadow above the eastern horizon. Shadows are not just what we see on the sidewalk,...

    $5 - $10 per group Ages 6 - adult 10 to 30 minutes
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    The Exploratorium
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    In this activity, learners simulate Otto von Guericke's famous Magdeburg Hemispheres experiment. In this modern, low cost version, a pair of learners try to pull apart two suction cups (dent...

    $10 - $20 per group Ages 11 - 18 10 to 30 minutes
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    PhET
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    In this online activity, learners adjust mountain snowfall and temperature to see how glaciers grow and shrink. They will use scientific tools to measure thickness, velocity and glacial budget....

    free Ages 8 - adult 10 to 30 minutes

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