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Showing results 1 to 20 of 53

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In this activity (on page 2 of the PDF under GPS: Sailboat Design Activity), learners will discover how the shape of an object, not just its weight, determines whether it floats or sinks.

\$1 - \$5 per group Ages 8 - 14 45 to 60 minutes
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Learners see that a carrot slice sinks in fresh water and floats in saltwater.

1 cent - \$1 per group Ages 8 - 14 10 to 30 minutes
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In this activity, learners discover that as the salinity of water increases, the density increases as well. Learners prove this by attempting to float fresh eggs in saltwater and freshwater.

1 cent - \$1 per group Ages 6 - 14 5 to 10 minutes
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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.

\$1 - \$5 per group Ages 8 - 14 30 to 45 minutes
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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.

\$1 - \$5 per group Ages 8 - 14 30 to 45 minutes
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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.

\$1 - \$5 per student Ages 8 - 14 30 to 45 minutes
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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.

\$1 - \$5 per group Ages 6 - 14 Under 5 minutes
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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.

1 cent - \$1 per group Ages 4 - adult Under 5 minutes
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In this activity, challenge learners to float a paper clip in a cup of water. Learners discover that a paper clip will sink in a cup of water, except when it is placed on a piece of paper towel.

1 cent - \$1 per student Ages 6 - 11 5 to 10 minutes
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In this activity, learners explore how changes in fluid pressure affect the buoyancy of a Cartesian diver inside a plastic soda bottle.

\$1 - \$5 per student Ages 8 - 14 10 to 30 minutes
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Learners carefully pour vegetable oil, water, and corn syrup in any order into a cup and discover that regardless of the order they are poured, the liquids arrange themselves in layers the same way.

\$1 - \$5 per group Ages 8 - 14 30 to 45 minutes
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In the kitchen, learners can perform their own density investigation.

1 cent - \$1 per student Ages 8 - 14 5 to 10 minutes
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In this activity, learners use tinfoil to build and test their own boats - which designs will float, and which will sink?

1 cent - \$1 per student Ages 6 - 11 45 to 60 minutes
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In this quick activity/demonstration about density, learners examine what happens when two cans of root beer--one diet and one regular--are placed in a large container of water.

1 cent - \$1 per group Ages 4 - 14 Under 5 minutes
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In this activity, learners investigate the Moon's infancy and model how an ocean of molten rock (magma) helped shape the Moon that we see today.

Over \$20 per group Ages 8 - 14 10 to 30 minutes
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In this activity, learners are introduced to robotic submarines called gliders. Learners make “gliders” from plastic syringes and compare these to Cartesian bottles and plastic bubbles.

\$10 - \$20 per group Ages 11 - 18 45 to 60 minutes
Learners conduct two activities to investigate two properties of liquids: density and viscosity. In a clear container, learners stack 7 different liquids which will layer according to their density.

\$5 - \$10 per group Ages 11 - 14 30 to 45 minutes
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In this water activity, learners test which objects float and which sink. Learners discover that objects behave differently in water.

\$5 - \$10 per group Ages 4 - 6 30 to 45 minutes
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In this activity, learners explore and compare the buoyant properties of materials found in nature and in human-made materials.

1 cent - \$1 per group Ages 4 - adult
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In this activity about humans and space travel (page 1 of PDF), learners compare and contrast the behavior of a water-filled plastic bag, both outside and inside of a container of water.

1 cent - \$1 per group Ages 6 - 11 45 to 60 minutes