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Showing results 21 to 40 of 40
Magic Sand: Nanosurfaces
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This is an activity/demo in which learners are exposed to the difference bewteen hydrophobic surfaces (water repelling) and hydrophilic surfaces (water loving).
Aluminum Boats
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Test the buoyancy of an aluminum foil boat and an aluminum foil ball. Why does the same material in different shapes sink or float?
Liquid Layers
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Experiment with liquids of different densities and create liquid layers. For example, oil and water have different densities: oil floats on water because it is less dense than water.
Ocean in a Bottle
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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.
Build A Bee Bath
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In this activity, learners use found natural materials to create a water haven for bees and other insects.
Drops on a Penny
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In this activity, challenge learners to predict and investigate how many water drops they can fit on one penny.
Tissue Paper Spray Art
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In this activity, learners observe color mixing and absorbency using colored tissue paper and spray bottles.
Sunny Day Painting
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In this activity, learners explore properties of water and watch evaporation happen by "painting" with water in the sun.
Make a Salt Volcano (Lava Lite)
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This activity about density provides instructions for making a miniature "lava lite" with just salt, oil, water, and food coloring.
The Rain Man
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In this activity, learners observe the hydrologic cycle in action as water evaporates and condenses to form rain right before their eyes.
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?
Low-Tech Water Filter for High-Impact Clean
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In this activity, learners consider the water features they might enjoy at a community park--a pond, brook, water playground (or "sprayground"), or pool--and what happens to the water over time.
Water, Water Everywhere
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In this activity, learners estimate how much water they think can be found in various locations on the Earth in all its states (solid, liquid, and gas) to discover the different water ratios in the Ea
Exploring Science Practices: Early Explorations
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This activity gives caregivers and their children an opportunity to practice scientific ways of thinking that are developmentally appropriate for early learners.
Turbidity
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This is an activity about turbidity, or the amount of sediment suspended in water.
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.
Frozen Sculptures
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In this activity, learners use objects they find on a nature and water to make creative frozen sculptures.
Wax 'n Wash
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In this activity, learners create secret messages using a candle. Learners discover that watercolor paint is attracted to some materials, like paper fibers, but not others, like oil.
Exploring the Universe: Ice Orbs
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“Exploring the Solar System: Ice Orbs” is a hands-on activity in which visitors investigate a frozen orb, trying to learn about objects hidden inside.
Ocean Currents
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In this activity, learners will explore how density is affected by temperature and how that can create currents.