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Showing results 61 to 80 of 179

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In this activity, learners use a laser pointer to project a microscopic image of a liquid sample suspended from the tip of a syringe.

Over $20 per group Ages 14 - adult 30 to 45 minutes
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In this activity (on pages 4-5), learners make fake snow by adding water to the super-absorbant chemical from diapers, sodium polyacrylate.

1 cent - $1 per group Ages 6 - adult 10 to 30 minutes
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In this activity, learners conduct an experiment to help Pharaoh design a better insulated tomb.

1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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Using electrolysis, learners produce hydrogen gas and oxygen gas from water molecules in a solution.

$10 - $20 per group Ages 6 - adult Under 5 minutes
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In this activity, learners explore how the application of nano-sized "whiskers" can protect clothing from stains.

Over $20 per group Ages 4 - adult 5 to 10 minutes
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Visitors separate a mixture of pebbles, salt crystals, and wood shavings by adding water and pouring the mixture through a strainer.

$1 - $5 per group Ages 6 - adult Under 5 minutes
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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.

$10 - $20 per group Ages 8 - 18 2 to 4 hours
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Learners compare the properties and solubilities of Styrofoam (TM), ecofoam packing peanuts, and popcorn. First, the solubility of each substance is tested in water.

1 cent - $1 per group Ages 11 - adult Under 5 minutes
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Extract your DNA from your very own cells! First, learners swish salt water in their mouth to collect cheek cells and spit the water into a glass.

1 cent - $1 per student Ages 8 - 18 5 to 10 minutes
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In this fun hands-on activity, learners use simple materials to investigate evaporation. How can the evaporation of water on a hot day be used to cool an object? Find out the experimental way!

$1 - $5 per group Ages 8 - 11 10 to 30 minutes
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Visitors mix urea with water in one flask and mix calcium chloride with water in another flask. They observe that the urea flask gets cold and the calcium chloride flask gets hot.

$1 - $5 per group Ages 6 - adult Under 5 minutes
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In this activity, learners will explore how a hydrometer works by building a working model and conducting experiments.

1 cent - $1 per group Ages 8 - 18 45 to 60 minutes
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Visitors observe three beakers. One beaker contains an egg immersed in vinegar. Visitors observe carbon dioxide gas escaping from the shell as the calcium carbonate reacts with the vinegar.

$5 - $10 per group Ages 6 - adult Under 5 minutes
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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
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This is a quick activity (on page 2 of the PDF under Gecko Feet Activity) about the forces of gravity and surface tension and how their behavior is influenced by size.

1 cent - $1 per group Ages 8 - 14 5 to 10 minutes
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This is a demonstration about how nature inspires nanotechnology. It is easily adapted into a hands-on activity for an individual or groups.

$5 - $10 per group Ages 6 - adult 10 to 30 minutes
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In this activity about the circulatory system and space travel (on page 38 of the PDF), learners use water balloons to simulate the effects of gravity and microgravity on fluid distribution in the bod

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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Visitors prepare six solutions combining vinegar and ammonia that range incrementally from acid (all vinegar) to base (all ammonia).

$1 - $5 per group Ages 6 - adult Under 5 minutes
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In this classic hands-on activity, learners estimate the length of a molecule by floating a fatty acid (oleic acid) on water.

$1 - $5 per student Ages 11 - 18 45 to 60 minutes
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In this activity, learners explore how watermills have helped harness energy from water through the ages.

$10 - $20 per group Ages 8 - 18 1 to 2 hours