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Layered Liquids: Chemistry You Can Drink
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In this chemistry activity (on page 2 of the PDF), learners make a layered drink with liquids of different densities.
Fly a Hot-Air Balloon
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Learners assemble a hot-air balloon from tissue paper. The heated air (from a heat gun) inside the balloon is less dense than the surrounding air and causes the balloon to float.
Buoyant Bubbles
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What keeps bubbles and other things, like airplanes, floating or flying in the air?
OBIS Oil Spill
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In this outdoor activity, learners simulate an oil spill using popcorn (both oil and popcorn float on water), and estimate the spill's impact on the environment.
Soaring Satellites
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Using a vertical wind tube and using simple materials, individuals and groups attempt to design a "satellite" that floats for at least 5 seconds.
Sink or Swim?
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Learners observe a tank of water containing cans of diet and regular sodas. The diet sodas float and the regular sodas sink. All the cans contain the same amount of liquid and the same amount of air.
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?
Sink or Swim?
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In this activity, learners identify different plastics in a mystery bag. Learners discover that plastics are classified #1 through #7.
Cauldron Bubbles
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In this activity, learners mix up a bubbly brew and examine density. Learners explore how they can make different materials fall and rise in water using oil, water, and salt.
Using Color to See How Liquids Combine
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Learners add different liquids (water, salt water, alcohol, and detergent solution) to water and observe the different ways the different liquids combine with water.
Build a Raft
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In this activity, learners explore density and buoyancy as they design and construct rafts.
Density Intensity
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In this activity on page 12 of the PDF (Rethinking the 3 R’s: It’s Easy to be Green), learners examine how recyclable materials are separated by various properties at recycling centers.
Density Rainbow
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In this activity, learners mix several sugar solutions to investigate the property of density. Each sugar solution has a different density and color of the rainbow.
Suminagashi: Floating Ink Paper Marbling
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In this activity, learners try to float ink on the surface of water to create a pattern and then capture it with absorbent paper.
Cartesian Diver
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In this quick activity (page 1 of the PDF under SciGirls Activity: California Fish), learners will build a simple Cartesian Diver in an empty 2-liter bottle.
Bernoulli's Blowout
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In this quick activity (page 1 of PDF under SciGirls Activity: Kites), learners will witness firsthand the effects of Bernoulli’s Principle by capturing a ping pong ball in the stream of air created b
Build A Hydrometer
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In this activity, learners will explore how a hydrometer works by building a working model and conducting experiments.
Glitter Globe
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This activity shows learners (with adult supervision) how to make a Glitter Globe, a fabulous toy that shimmers when you shake it.
Dissolving Different Liquids in Water
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In this activity, learners add different liquids to water and apply their working definition of “dissolving” to their observations.
Hovercraft
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In this activity, learners build a hovercraft using a paper plate, cup, and simple motor.