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How Did That Get There?: Water Pollution
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As a group, learners consider sources of water pollution to understand where pollution starts and where it ends up.

Water Clean-up
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This is an activity (located on page 3 of the PDF under Water Clean-up Activity) about the use of reduction agents to decontaminate ground water.

Design a Submarine
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Learners act as engineers and design mini submarines that move in the water like real submarines.

In the Toilet
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This activity explores the basic workings of a siphon, which is the core technology that makes toilets work.

Pop Can "Hero Engine"
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In this activity, learners build water-propelled engines from soft drink cans.

Watercraft
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In this design challenge activity, learners build a boat that can hold 25 pennies (or 15 one inch metal washers) for at least ten seconds before sinking.
Ships Ahoy!
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Design a vessel that tests the limits of wind power given a set of off the shelf and recycled materials.

Indicating Electrolysis
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Electrolysis is the breakdown of water into hydrogen and oxygen. This Exploratorium activity allows learners to visualize the process with an acid-based indicator.

Fragile Waters
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In this activity (on pages 18-29) learners explore the impact of the March 24, 1989 oil spill in Alaska caused by the Exxon Valdez tanker.

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.
Up, Up and Away with Bottles
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In this activity, learners make water rockets to explore Newton's Third Law of Motion. Learners make the rockets out of plastic bottles and use a bicycle pump to pump them with air.
It's A Gas!
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Visitors mix water and sodium bicarbonate (baking soda) in a large flask. They then add citric acid to the mixture and stopper the flask. The resulting reaction creates carbon dioxide gas.

Static Water
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In this activity, learners will use static elecricity to bend a stream of water without touching it. Learners will explore physics and cause and effect through this activity.
Finding the Right Crater
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This quick demonstration (on page 11 of PDF) allows learners to understand why scientists think water ice could remain frozen in always-dark craters at the poles of the Moon.

Using Solar Energy
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In this activity, learners discover how solar energy can be used to heat water.

Irrigation Ideas
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In this activity, learners explore how civil engineers solved the challenge of moving water via irrigation.

Boats Afloat
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In this water activity, learners build boats that float and sink. First, learners listen to the book, "Who Sank the Boat" and practice making predictions throughout the story.

Draggin' Boats
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Learners design, build, and test models of "dragon boats" made from up to three milk cartons.

Marshmallow Models
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No glue is needed for learners of any age to become marshmallow architects or engineers.

Measure the Pressure: The "Wet" Barometer
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In this activity, learners use simple items to construct a device for indicating air pressure changes.