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A Little Drop of Water: Cohesion
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Learners explore water's property of cohesion through two investigations.
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A Funny Taste
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In this activity, learners explore the different salinities of various sources of water by taste-testing.
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Drying It Out
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In this activity, learners investigate and compare the rate of drying in different conditions.
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Comparing the Density of an Object to the Density of Water
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Learners compare the weight of equal volumes of wax, water, and clay. Learners discover that since the wax weighs less than an equal volume of water, it is less dense than water and will float.
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Diet Light
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In this quick activity, learners observe how the added sugar in a can of soda affects its density and thus, its ability to float in water.
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Measure the Speed of a Water Leak
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In this activity (page 2 of PDF under GPS: Glaciers Activity), learners will measure the rate at which water streams out of a leaky cup.
Big and Little Cups
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In this indoor or outdoor water activity, learners pour water from small cups to large cups and containers. In doing so, they discover water takes the shape of its container.
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How Big is Small
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In this classic hands-on activity, learners estimate the length of a molecule by floating a fatty acid (oleic acid) on water.
Pepper Scatter
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In this activity, learners explore the forces at work in water. Learners experiment to find out what happens to pepper in water when they touch it with bar soap and liquid detergent.
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Using Solar Energy
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In this activity, learners discover how solar energy can be used to heat water.
How Does Water Climb a Tree?
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In this activity, learners conduct an experiment to explore how water flows up from a tree's roots to its leafy crown.
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Water: Clearly Unique!
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In this activity on page 4 of the PDF (Water in Our World), learners conduct some quick and easy tests to determine the differences between water and other liquids that look very similar to water.
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Uplifting Force: Buoyancy & Density
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In this investigation, learners explore the force known as buoyancy by placing various objects into water and observing how they behave (for example, which sink more quickly, which float, how much wat
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Waves and Tides
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In this 7-10 day investigation, learners develop an understanding of waves and tides and their motion through discussion, demonstration, and hands-on activities.
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Pepper Scatter
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In this quick activity, learners break the tension that happens when water develops a "skin." Learners use water, pepper and some soap to discover the wonders of surface tension—the force that attract
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Watercraft
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In this design challenge activity, learners build a boat that can hold 25 pennies (or 15 one inch metal washers) for at least ten seconds before sinking.
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What's So Special about Water: Surface Tension
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In this three-part activity, learners play a game and conduct two simple experiments to explore water and surface tension. Learners will have fun discovering how water "sticks" together.
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Oil Spill Cleanup
This hands-on experiment will provide learners with an understanding of the issues that surround environmental cleanup.
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Walk On Water Bugs
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In this activity (on pages 29-35), learners examine water pollution and filtration.
Disappearing Water
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In this outdoor water activity, learners explore evaporation by painting with water and tracing puddles. Learners will discover that wet things become dry as the water evaporates.