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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.
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.
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.
Float or Sink?
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In this water activity, learners test which objects float and which sink. Learners discover that objects behave differently in water.
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
We all Scream for Ice Cream
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In this activity, learners observe how salinity affects the freezing point of water by making and enjoying ice cream.
Sink or Float?
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In this water activity, learners test which objects float and which sink. Learners discover that objects behave differently in water.
Breaking the Tension: Surface Tension 1
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Learners explore how the attractive forces between water molecules create surface tension and allow certain objects to float on the surface of water.
What-a-cycle
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In this activity, learners act as water molecules and travel through parts of the water cycle to discover that it is more complex than just water moving from the ground to the atmosphere.
Super Soaker
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In this activity (page 1 of the PDF under SciGirls Activity: Bogs), learners will test cups full of potting soil, sand, and sphagnum moss to see which earth material is able to soak up the most water.
Stuck on You: Adhesion
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Learners explore water adhesion and learn about why water molecules are more strongly attracted to some substances than others.