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Drop Shape
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In this activity, learners get a closer look at the shape of a drop of water and a drop of oil. Learners first drip water onto wax paper and examine the shape of separate drops from a side view.
Changing the Density of a Liquid: Adding Salt
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Learners see that a carrot slice sinks in fresh water and floats in saltwater.
How Much Water is in that Cloud?
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In this activity, learners working in pairs saturate a cotton ball using water drops from an eyedropper to demonstrate the high water capacity of clouds.
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.
Colors Collide or Combine
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Learners place multiple M&M's in a plate of water to watch what happens as the candies dissolve.
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.
Defining Density
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In this introductory demonstration and activity, learners are introduced to the concept of density as they explore a rock and a wooden block in water.
Changing the Density of an Object: Changing Shape
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Learners will see that changing the shape of an object, like a clay ball, that is more dense than water, can affect whether the object will sink or float.
How Plants Grow
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In this biology activity (page 3 of the PDF), learners will explore how plants turn sunlight into food through a process called photosynthesis.
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.
The Liquid Rainbow
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Learners are challenged to discover the relative densities of colored liquids to create a rainbow pattern in a test tube.
Why Doesn’t the Ocean Freeze?
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In this activity, learners explore how salt water freezes in comparison to fresh water.
Water Wire: Electricity Flowing Through Water
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In this activity on page 10 of the PDF, learners detect the amount of energy that can flow through a sodium chloride electrolyte solution with a light sensor.
Desert Water Keepers
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In this outdoor, sunny day activity, learners experiment with paper leaf models to discover how some desert plants conserve water.
Gravity Fountains
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This activity (located on page 3 of the PDF under GPS: Glaciers Activity) is a full inquiry investigation into the forces of gravity and air pressure.
Foam Tower
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In this activity (page 1 of the PDF under SciGirls Activity: Water Slides), learners will whip up some suds with a cup of water and a tablespoon of dish soap until the bubbles are stiff enough to star
What Molecules Make the Holes in Bread?
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In this activity, learners will discover why there are holes in bread.
Water Underground
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Many people get water from a source deep underground, called groundwater.
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.
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.