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Straining Out the Dirt
Learners take on the role of environmental engineers as they design water filters.
Below the Surface: Surface Tension II
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In this activity learners explore surface tension. Why are certain objects able to float on the surface of water and how do detergents break the surface tension of water?
Oh Buoy!
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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.
Runaway Runoff
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When it rains, water can collect on top of and seep into the ground. Water can also run downhill, carrying soil and pollution with it.
Water Treatment
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Water treatment on a large scale enables the supply of clean drinking water to communities.