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Water Treatment
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Water treatment on a large scale enables the supply of clean drinking water to communities.

Conductivity: Salty Water
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Water, whether fresh or salty, serves as one of the best electrical conductors on the planet. Does salt effect its conductivity?

Differing Densities: Fresh and Salt Water
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In this activity, learners visualize the differences in water density and relate this to the potential consequences of increased glacial melting.

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.

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.
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.

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

Global Climate Change and Sea Level Rise
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In this activity, learners practice the steps involved in a scientific investigation while learning why ice formations on land (not those on water) will cause a rise in sea level upon melting.

Water Fountain
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In this activity, learners explore how a hydraulic pump works. Learners work in teams to design and build a unique water fountain that employs a hydraulic pump.

Ocean in a Bottle
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In this activity, learners consider how oil spills behave in the ocean and what impact they have on marine wildlife.
What Does Life Need to Live?
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In this astrobiology activity (on page 11 of the PDF), learners consider what organisms need in order to live (water, nutrients, and energy).
Making An Impact!
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In this activity (on page 14 of PDF), learners use a pan full of flour and some rocks to create a moonscape.

NEWspaper: Make Your Own Paper
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Learners make their own paper using old newspaper. Learners can make their paper colorful by adding construction paper.

Pipeline Challenge
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In this activity, learners explore how engineers develop pipeline systems to transport oil, water, gas, and other materials over very long distances.

Build a Battery
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Learners make a simple battery out of "sandwiches" of aluminum foil, pennies, and a salt water-soaked paper towel.

Recycling Paper
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In this crafty chemistry activity (on page 2 of the PDF), learners make their own paper from used paper they may have otherwise thrown away.

Lungometer
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In this environmental health activity, learners investigate their own vital lung capacities.