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Water Underground
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Many people get water from a source deep underground, called groundwater.
Float Your Boat
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In this physics activity, learners will explore buoyancy.
Balloon in a Flask
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Learners observe a flask with a balloon attached over the mouth and inverted inside the flask.
Window Under Water
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Glare from the sun and ripples from the wind can make it hard to see what's below the surface of a body of water.