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Home Water Audit
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This activity offers learners and their families several ways to raise their awareness together about home water.

Water Treatment
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Water treatment on a large scale enables the supply of clean drinking water to communities.

Water Underground
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Many people get water from a source deep underground, called groundwater.

The World's Water
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Water on Earth is in lakes, the ocean, rivers, underground, and frozen glaciers.

Frozen Sculptures
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In this activity, learners use objects they find on a nature and water to make creative frozen sculptures.

Clear Water, Murky Water
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How do scientists measure how clear or murky water in a lake is? How does water clarity (clearness) affect what lives in the lake?

The Scoop on Habitat
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Some aquatic organisms live in open water, while some live in soil at the bottom of a body of water.

Water Body Salinities II
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In this activity, learners discuss the different salinities of oceans, rivers and estuaries.

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.

Causes and Effects of Melting Ice
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In this activity, learners explore the concept of density-driven currents (thermohaline circulation) and how these currents are affected by climate change.

Freezing Lakes
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In some parts of the world, lakes freeze during winter. In this activity learners will explore water’s unique properties of freezing and melting, and how these relate to density and temperature.

Water Body Salinities I
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In this activity, learners investigate the different salinity levels of oceans, rivers and estuaries.

Make a UV Detector
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In this activity, learners use tonic water to detect ultraviolet (UV) light from the Sun and explore the concept of fluorescence.

Water Bugs
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Some bugs can walk on the surface of a lake, stream, river, pond or ocean.

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.

Cartesian Diver
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In this demonstration, learners observe the effects of density and pressure. A "diver" constructed out of a piece of straw and Blu-Tack will bob inside a bottle filled with water.

Solving Dissolving
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The Sacred Cenote at Chichén Itzá is a sink hole, or well, containing groundwater. In this activity, learners create their own cenote using chalk, limestone, acids, and rain water.

Make a Lake
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Where rainwater goes after the rain stops? And why there are rivers and lakes in some parts of the land but not in others?

Dip Dip, Hooray
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Lakes, streams and other freshwater bodies are a habitat for lots of living things, big and small.

A Crayon Rock Cycle- Metamorphic
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This is part 2 of the three-part "Crayon Rock Cycle" activity and must be done after part 1: Sedimentary Rocks. In this activity, learners explore how metamorphic rocks form.